Autograph Authentication Report
2021 Nintendopes Stickers Open Edition - Artist Mark Pingitore Auto · #19a
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 | Abbreviated two-part signature: a compressed angular 'M' form, a gap, then a taller 'P' leading into a reduced 'gt' and a long horizontal terminal bar. The 'M' group is about 40% of the width. | The same two-part abbreviated structure appears in R1, R2, R3, R6, R7 and R8, with similar proportions between the M group and the P group. | Match |
| Slant and baseline | Slight rightward slant. The baseline rises gently toward the end, with the P stem extending below the baseline. | R1, R6 and R8 show the same mild right slant and the descending P stem. R3 and R7 are slightly more upright. | Natural variation |
| Letter construction | The 'M' is built as an up-down zigzag with a looped or hooked 'l'-like riser, followed by a separate cupped stroke. The 'P' has a long downstroke and a flat-topped bowl that runs into the 'gt' strokes. | The zigzag M with riser and following cup stroke is clearly seen in R1, R2, R6 and R8. The P with flat bowl and following angular strokes appears in R1, R2 and R6. | Match |
| Connecting strokes | The M group and P group are separated by a pen lift. Within each group, strokes are connected. | The pen lift between groups is consistent across all references. | Match |
| Starting and ending strokes | The start is a tapered entry. The end is a long, thin horizontal crossbar extending right with a tapered finish. | R1, R6 and R8 show the same long tapered terminal bar. R2 and R7 show a shorter version. | Match |
| Line quality and speed | Fluid strokes with tapered terminals and variable width. No visible tremor or hesitation at this resolution. | References show similar fast marker execution. | Match |
| Pen pressure pattern | Heavier on the downstrokes of the M and the P stem, lighter on the terminal bar. | A similar pattern is visible in R1, R6 and R8. | Match |
| Spacing | Moderate gap between the M and P groups. | Comparable gap in R1, R2, R6 and R8. | Match |
| Flourishes and underlines | No underline. The extended terminal bar acts as the only flourish. | Same in references. | Match |
| Placement and size | Blue marker, signed vertically along the left edge of the sticker over the green/blue background, sized to card height. | Reference crops do not show full-card placement. Ink colors vary (blue in R1, R3, R6, R8; black in R2, R4, R5, R7). Size relative to card appears similar. | Not assessable |
Examiner notes
Our card is a 2021 Nintendopes Stickers Open Edition artist auto. References R2–R8 come from the same Nintendopes set, so they are the same era and surface type. R1 is a Magic Marker Art Horrorible Kids Series 9 card from a similar period. No era-related drift is expected, and none is seen.
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.
