Autograph Authentication Report
2021 Nintendopes Stickers Open Edition - Artist Mark Pingitore Auto · #36a
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 zigzag 'M' with a short following letter, a gap, then a large 'P' with a descender and a terminal stroke. | R1–R8 all show the same two-group structure: a zigzag M-group, a gap, then a P-group ending in a horizontal t-bar or flourish. | Match |
| Slant and baseline | Signed vertically along the left edge of the card. Read horizontally it has a slight upward right slant with the baseline rising mildly. | Rightward slant with a roughly level-to-rising baseline in R2, R3, R5 and R8. | Match |
| Letter construction | The 'M' is built as angular peaks (W-like zigzag). The 'P' has an upper bowl and a long downward descender loop (g/y-like) before the terminal. | Same angular zigzag M in R1, R3, R5, R6 and R8. Same P-bowl plus descender structure in R2, R3, R5 and R8. | Match |
| Connecting strokes | The M-group runs continuously into its small trailing letter. There is a lift between the M-group and the P-group. | The same lift between the two groups and continuous M-group construction appear in all references. | Match |
| Starting and ending strokes | The start looks tapered. The terminal reads as a short looping/curved finish rather than the long horizontal t-bar seen in some references. | The long horizontal terminal is prominent in R1, R5 and R8. It is shorter or abbreviated in R6 and R7. | Natural variation |
| Line quality and speed | Strokes appear fluid with tapering, and no obvious tremor or blunt stops are visible at this resolution. | Fast, confident line in all references. | Match |
| Pen pressure pattern | Ink density varies, heavier on downstrokes, consistent with a felt/marker-type pen. | Similar marker-pen pressure variation in R2, R3, R5 and R8. | Match |
| Spacing | A moderate gap between the M-group and the P-group. | Comparable inter-group gap across the references. | Match |
| Flourishes and underlines | No underline. The terminal flourish is compact. | No underlines. Terminal flourish length varies between references. | Natural variation |
| Placement and size | Vertical orientation along the lower-left artwork, medium size, in blue ink. | Mostly horizontal placement in the reference crops. Ink is blue or black. | Natural variation |
Examiner notes
Our card is 2021 Nintendopes Stickers Open Edition. R2–R8 come from the same set and were likely signed in the same period, so era drift is minimal. R1 (Magic Marker Art Horrorible Kids Series 9) is a sister product from the same artist and probably a nearby period. All references show the same abbreviated 'MP'-type stylized autograph, so no career-era change is in play.
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.
