Φ

J013-4MPU-IAQP

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Summary Statistics

Tadbulb [075/197]
[standard non-holofoil]

Overall Phi (Φ) score^[1]: 1.090
Phi rank^[2]: #187 among std cards (n=192)

Zone ranks:
surface Phi rank^[2]: #202
edge Phi rank^[2]: #185

Centering & alignment:
rank^[2]: #99 among all cards (n=282)
lr ratio: 0.851 [46.0/54.0]
tb ratio: 1.017 [50.4/49.6]

other info:
owner id: B120-EEQK
submitted: 2026-02-27
analyzed: 2026-03-01
tamper tag ID: see footnotes
status: control, surface
Φ version: v1.1.7

^[1]Overall Φ scores = 70% of surface + 30% of edges.
^[2]ranks and histogram distributions are
updated periodically.

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Irregular Reflecetions

Fig. 1 | Spatial distribution of surface irregularities. Irregular reflections detected by structured-light 3D scanning plotted at ~80 μm resolution. Colour intensity indicates magnitude of angular deviation (yellow: high; purple: low). Only reflections exceeding the 95th percentile of the reference distribution are displayed. High local densities (greyscale contours) indicate spatially clustered surface defects. Gridlines denote physical card dimensions (cm).

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Phi Metrics & Rank

Fig. 2 | Composite Φ score distributions by zone. Multiple photometric irregularity metrics were integrated through a proprietary pipeline to derive Φ scores (red). Surface and edge zones were analyzed independently to control for zone- and finish-specific optical variance. Reference distributions (grey; n = 100,000 simulated) were parameterized from empirical measurements of graded reference cards (n = 86–92 per zone and type). Vertical thresholds denote condition percentiles from 5th (damaged) to 95th (gem). Please note; displayed distributions and reference metrics are different for standard and holographic foil cards.

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Centering/Alignment

Fig. 3 | Quantitative centering and border geometry. Left/right (LR) and top/bottom (TB) border ratios (red) derived from card edge and art border measurements at ~0.09–0.17 mm precision. Reference distribution simulated from all cards in the dataset (n > 200; n = 100,000 simulated).

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If you would like to support continued development of Φ, please reach out at phi.grading[at]gmail.com.