2014-03-22 — Provenance — Investigator ████████ / BAR-ACD-██████

Carbon dating of the frame places its construction in the late nineteenth century. The glass, however, contains trace elements not consistent with manufacturing techniques of that period. The mirror's history prior to its acquisition by Dr. ████ ██████ has not been recovered despite extensive investigation through estate records, period catalogues of comparable furniture, and inquiry to known dealers in nineteenth-century brass-frame work.

Dr. ██████'s research journal, recovered from his laboratory at ███████ University, contains scattered references to the mirror beginning approximately two years before his death. The relevant entries treat CASE-2112 as a subject of clinical interest rather than ownership. The most extensively quoted passage:

The mirror exposes the processing limitations of our visual cortex. What we perceive as continuous is merely an illusion born of insufficient neurological capacity.

Several pages of the journal in the period surrounding this entry have been deliberately removed. Forensic examination of the binding indicates the removal occurred before Bureau acquisition. The remaining pages do not reference the removed content.

Partial fingerprints not matching Dr. ██████ were recovered from the rear panel of the frame during initial intake processing. The prints do not match any record in international databases. Forensic analysts at ACD described the ridge pattern as inconsistent with standard human dermal architecture, declining to characterize the inconsistency further in the case file.

2014-09-04 — Working Theoretical Model — Dr. E████ C███ / BAR-OPM-36826

Initial neurological examination of exposed subjects, and tissue analysis of decedents, suggested a model of neurological strain: the mirror imposes a sustained processing load on the visual cortex which exceeds the brain's metabolic capacity, producing what tissue analysis from decedents describes as catastrophic resource depletion. Neurons in affected regions display mitochondrial damage consistent with metabolic demands above cellular tolerance.

The model accounts for the observed neural deterioration but does not explain the source of the imposed load.

2015-01-22 — Notation on Exposure Gradient — Dr. E████ C███ / BAR-OPM-36826

Across testing and incident records, exposure duration correlates with severity of neurological damage in a roughly continuous gradient. Brief exposure under two minutes produces effects that typically resolve within seventy-two hours. Extended exposure produces deterioration that does not resolve; the death of Subject #4 following the forty-two-minute exposure recorded in Incident CASE-2112-5 represents the upper-bound data point against which the current testing limits were calibrated. The boundary between recoverable and non-recoverable exposure has not been determined with precision; testing to characterize it further is not authorized.

2016-02-28 — Revised Working Model — Dr. ████████ / BAR-OPM-QSS-█████

Following the observations recorded in Incident CASE-2112-6, the working theoretical model has been revised. Dr. Chen's strain model accounts for the symptoms observed in subjects but does not account for the measurable thermal output of CASE-2112 during active observation. The strain model attributes the source of neural damage to the observer's own brain failing under processing load; it offers no account of energy being released from the mirror across the same interval.

The current working hypothesis, advanced by OPM Quantum Studies Sector, treats CASE-2112 as a partial dimensional interface rather than a purely perceptual hazard. Under this hypothesis the mirror does not reflect the observer's environment but renders a near-equivalent — a parallel state designated provisionally α-1 against the baseline α-0 — that is structurally similar but configurationally divergent. The neurological effects observed in subjects are then symptomatic of the brain attempting to reconcile two distinct visual inputs from two slightly divergent states; the thermal output is symptomatic of the energy required to maintain the partial render.

The hypothesis is offered as one account that fits the available observations. It is not the only such account. The mechanism by which the mirror would render α-1, the source of the energy released as heat, and the actual character and degree of any divergence between states are all undetermined. Dr. Chen's strain model is retained as an accurate description of the consequence on the observer; the dimensional-interface hypothesis is offered as a possible account of the cause and has not been verified.

The revised model carries no operational implications for containment. The exposure limits established following Incident CASE-2112-5 already restrict testing to durations at which the mirror's thermal output remains negligible; no change to containment apparatus or procedure follows from the model's revision.

2016-03-14 — Hazard Profile Amendment — Dr. E████ C███ / BAR-OPM-36826

Following the revision of the working theoretical model recorded in the preceding Note, OPM Quantum Studies Sector has submitted formal request that the hazard profile of CASE-2112 be amended to reflect the unresolved status of dimensional involvement. The current classification of C/P has been appended with the -PENDING modifier in accordance with the modifier's standard application to hazard profiles under active review. The amendment does not reflect a determination that CASE-2112 exhibits Dimensional-class hazard properties; it reflects the open status of investigation into the same.

2014-04-17 – Incident CASE-2112-1: Initial Perceptual Latency

Subject #1 (Marcus T.) was instructed to perform simple repetitive hand movements while observing his reflection in CASE-2112 for three minutes. At one minute forty-two seconds he reported that something felt off. At two minutes fifteen seconds he stated, "my hand is falling behind itself," and demonstrated by waving, noting that he could see the lag between his actual motion and its reflection. The subject was withdrawn at the three-minute mark per protocol.

Post-exposure examination showed a twenty-seven percent decrease in measured visual processing speed and minor inflammation of the visual cortex. Effects resolved fully within eight hours. The subject reported headache persisting for approximately thirty-six hours afterward.

2014-05-22 – Incident CASE-2112-2: Proximity Correlation

Subject #2 (Eric H.) and Subject #3 (Daniel W.) were positioned at varying distances from CASE-2112 and instructed to observe each other's reflections rather than their own. Severity of effects correlated directly with proximity to the mirror. Subject #2, positioned closer, experienced severe discontinuity within two minutes and described Subject #3's reflection as "jumping from point to point." When Subject #3 was directed to smoothly raise an arm, Subject #2 reported seeing the movement as a series of discrete positions with the intervening motion missing.

Post-exposure MRI of Subject #2 showed mild lesions forming in the occipital lobe, which persisted for seventeen days before gradually diminishing. Subject #2 reported recurring migraine for approximately three months following the test. Subject #3, positioned further from the mirror, experienced only the brief disorientation typical of short-duration exposure.

2014-06-15 – Incident CASE-2112-3: Researcher Observation

Dr. Morrison (Level 3 researcher, volunteered with approval) was observed clinically while examining a detailed anatomical diagram reflected in CASE-2112. Of note in his verbal report during the test:

The images aren't moving continuously. They're... updating their positions. It's as if my brain can't process quickly enough.

At two minutes forty seconds Dr. Morrison began experiencing severe disorientation and was removed from the testing area. Subsequent MRI revealed significant inflammation throughout the visual processing centres. Dr. Morrison experienced notable cognitive decline in visual-spatial tasks for approximately six weeks before returning to baseline function.

2014-09-03 – Incident CASE-2112-4: Unauthorized Recording

Researcher Larkin, working outside the testing schedule and without authorization, attempted to record CASE-2112 using a high-speed camera at one thousand frames per second. Review of the recorded footage in isolation showed no anomaly. Researcher Larkin then viewed the high-speed footage on a monitor while simultaneously observing CASE-2112 directly.

He experienced an immediate seizure-like episode and lost consciousness within seconds. On recovery he described complete sensory overload and demonstrated significant cognitive impairment. MRI revealed extensive damage to the visual cortex and to the thalamus, with a pattern of deterioration not previously observed in CASE-2112 exposure. Despite intensive neurological intervention, Researcher Larkin died forty-seven days later. The autopsy report describes brain damage resembling early-stage Creutzfeldt-Jakob disease but progressing at substantially accelerated rate; the OPM neurologist on the autopsy declined to characterize the resemblance further.

The use of recording equipment in conjunction with direct observation of CASE-2112 is prohibited. The mechanism by which the simultaneous viewing produced the observed escalation has not been determined.

2014-12-17 – Incident CASE-2112-5: Extended-Exposure Fatality

Subject #4 (Thomas H.) was exposed to CASE-2112 for forty-two minutes under an extended-exposure testing series then in operation. Authorization for the series, the protocols under which it was conducted, and the personnel involved in its administration are not reproduced in this filing. The subject completed the session in a state of severe neurological compromise but ambulatory. Decline was progressive over the following weeks: motor coordination loss within the first week, total cessation of visual processing within ten days, persistent vegetative state by day thirty. Subject #4 died fifty-two days post-exposure.

Autopsy revealed extensive white matter deterioration throughout the brain, with damage concentrated in visual processing regions but extending to areas not previously implicated in CASE-2112 exposure. The OPM neurologist conducting the autopsy described the tissue as exhibiting damage consistent with sustained metabolic demand far exceeding cellular tolerance.

The extended-exposure testing program was terminated. No testing series of comparable scope has been authorized since. Maximum permitted exposure duration was reduced to three minutes pending further review.

2015-02-28 – Incident CASE-2112-6: Thermal Output Identified

During the first testing session in which thermal imaging was deployed alongside standard observer instrumentation, CASE-2112 was observed to undergo measurable surface temperature increase during active observation. Glass surface temperature rose at approximately 0.4°C per minute of continuous viewing. The rate increased with greater environmental complexity in the reflection and with continued observation.

The thermal output was not predicted by the strain model then in operation. Retrospective review of ambient temperature logs from Testing Chamber D-7 — instrumentation recording incidental environmental data not analyzed at the time — indicates that surface temperatures of approximately 67°C had been reached during the forty-two-minute exposure recorded in Incident CASE-2112-5. Exposure durations of comparable length remain prohibited.