Autograph Authentication Report
2022 Leaf Rookie Pro Set - Auto · #PSA-TT1
Findings
Signature comparison
This card. The signature as cropped from the slab photo (front).
Below, the known examples Crown compared it with. Examples with stronger proof (signed in front of staff, or certified by an independent authenticator) carry the most weight.
Feature by feature
| Feature | This card | Known examples | Result |
|---|---|---|---|
| Overall form and proportions | Compact three-element signature: a looped 'T/L'-like capital, a small 'r-e' cluster, then a long rising terminal stroke sweeping to the upper right. | Every reference shows the same three-part abbreviated 'Tre' with a long rising terminal. R2/R7, R5 and R6 are closest in proportions; R1, R3 and R8 have a shorter, more hooked terminal. | Match |
| Slant and baseline | Upright strokes lean slightly backward; the baseline rises gently left to right. | Same mild back-lean and rising baseline throughout. Ours is at the more slanted end of the range. | Natural variation |
| Letter construction | The capital starts with a top stroke, drops to a lower-left loop that runs into the baseline, and continues into a small 'r' hump and a closed 'e/o' form. | Same construction in R1, R2, R3, R5, R6, R7 and R8. R8 and R3 have a more prominent top hook on the capital. | Match |
| Connecting strokes | Capital, 'r' and 'e' join in one continuous movement before the terminal stroke. | Same continuous connection in all clear references. | Match |
| Starting and ending strokes | Starts with a light entry at the top of the capital. Ends in a long tapered upstroke that thins to a point at the far right. | Tapered terminal flourish is present in all references. R2, R5, R6 and R7 show the same long, thin finish. | Match |
| Line quality and speed | Fluid strokes with smooth curves. No visible tremor or hesitation at this resolution; the terminal taper indicates speed. | Rapid, fluid execution in all references. | Match |
| Pen pressure pattern | Heavier through the loops and lower curves, lighter on the final upstroke. | Same heavy-loop, light-terminal pattern. | Match |
| Ink color / pen | Purple ink, fine-medium tip. | Most references are blue. R6 is purple on the same card design, so a purple-ink version of this issue exists. | Natural variation |
| Spacing | Tight letter cluster with a long, open terminal. | Same. | Match |
| Flourishes and underlines | No underline; the extended terminal serves as the flourish. | Same; no underlines in any reference. | Match |
| Placement and size | Inside the light signature window above the nameplate, spanning most of the window width. | R4, R5 and R7 show the same placement within the signature window and the nameplate area. | Match |
| Reproduction indicators | Visible stroke-width variation and a natural taper. No halftone dots apparent at this resolution. Ink appears to sit on the surface, but this cannot be confirmed from a scan. | N/A | Not assessable |
Measurements
Software traced the ink and measured it against the known examples. The shaded band is the signer's normal range across those examples; the gold marker is this card.
| Feature | This card | Known examples | Normal range | |
|---|---|---|---|---|
| Slant of upright strokes | -10.6° | -9.1–-4.4° | In range | |
| Overall writing angle | 9.0° | 0.0–13.1° | In range | |
| Height to width | 0.332 | 0.257–0.443 | In range | |
| Ink travel per unit width | 4.65× | 2.5–3.91× | Outside range | |
| Stroke thickness variation | 0.57 | 0.318–0.556 | In range | |
| Closed loops | 34 | 0.0–23.0 | Edge of range | |
| Separate strokes | 6 | 4.0–9.0 | In range |
The core shape measurements all fall within the range Tre Turner shows across his own reference signatures: the lean of his upright strokes, the overall angle of the signature, and its height relative to width. Two photo-sensitive measures sit outside that range. The amount of ink line per unit of width is high, and the count of enclosed loops is somewhat high. These measures are easily distorted by a thin pen line and the busy photo behind the signature, so they are a reason for a closer physical look rather than evidence against the signature. Overall, the numbers support the visual finding that this signature is consistent with Turner's.
Examiner notes
Ours is on a 2022 Leaf Pro Set Draft autograph (#PSA-TT1), signed around Turner's 2022 draft/rookie period. All references appear to be the same issue and era: R1-R5, R7 and R8 are 2022 Leaf Pro Set PSA-TT1 autos, and R6, although listed as '2024', shows the same card design. Era drift is not a factor; the differences come from signing speed, pen and session.
How Crown authenticates autographs: the signature is compared with known examples gathered from Crown's own authenticated cards, independent authenticators and public listings, measured by software, examined by an AI forensic model, and signed off by Crown Grading staff. The decision above is Crown's.
