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← Cert #000035298

Autograph Authentication Report

Ground Chuck

2024 Mutagen Canister Kids Stickers Open Edition - Artist Mark Pingitore Auto · #30a

Authenticated Crown Grading · reviewed Nov 3, 2026

Findings

Signer
Mark Pingitore
Autograph
Signed directly on the card, front side
Handwriting
Matches the known signatures it was compared with. (8 known signatures)
Printed or copied?
At the available resolution, the ink shows natural density variation and skipping consistent with a felt-tip marker on glossy sticker stock. No regular dot or halftone pattern is visible. Slightly uneven placement in open background space argues against a printed facsimile. A loupe check is still needed to confirm ink sits on top of the print and gloss.
Decision
Authenticated by Crown Grading after staff review.

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.

R1
Crown (reviewed)
Crown cert 000069732
R2
Crown (reviewed)
Crown cert 000035410
R3
Crown (reviewed)
Crown cert 000035413
R4
Crown (reviewed)
Crown cert 000035416
R5Less weight
Crown (reviewed)
Crown cert 000035425
R6
Crown (reviewed)
Crown cert 000035431
R7
Crown (reviewed)
Crown cert 000060598
R8Less weight
Crown (reviewed)
Crown cert 000035419

Feature by feature

FeatureThis cardKnown examplesResult
Overall form and proportionsTwo-part signature: a compressed zigzag 'M' fused with an 'l'-like upstroke, then a larger 'P' unit with a long trailing horizontal stroke. Written vertically along the right edge of the artwork.Every reference shows the same two-part structure: a zigzag 'Ml'/'Nl' unit, a gap, then a 'P'-based unit ending in a long horizontal stroke (R1, R3, R6, R7 most clearly).Match
Slant and baselineStrong rightward slant in the first-name unit. Baseline is fairly level relative to the signing orientation.Consistent rightward slant and level-to-slightly-rising baseline across R1–R8.Match
Letter construction'M' is made as sharp angular peaks with a tall final loop or upstroke. 'P' has a tall stem and a closed bowl, and the remaining letters are compressed into a short looped form.Same angular 'M' peaks and tall final upstroke (R1, R3, R4, R6, R8). The 'P' stem and bowl are present, and the later letters vary from legible 'gt' (R1, R6) to heavily abbreviated (R7, R8).Natural variation
Connecting strokesThe 'M' and 'l' run continuously. There is a pen lift before the surname unit.Continuous first-name unit with a lift before the 'P' in all references.Match
Starting and ending strokesStarts with a short lead-in at the base of the 'M'. Ends with an extended, tapering horizontal tail.Same lead-in, and a long tapering terminal stroke (R1, R2, R3, R6, R7 especially).Match
Line quality and speedFluid, confident strokes with tapered ends. No visible tremor or hesitation at this resolution.Fast, fluid marker strokes throughout.Match
Pen pressure patternFelt-tip marker with mild density variation. Lighter, skipping areas appear on the tail and turns.Similar marker density variation. R7 shows notable skipping on a glossy surface, comparable to ours.Match
SpacingClear gap between the first-name unit and the surname unit. The surname unit is compressed.Same gap and a compressed surname unit.Match
Flourishes and underlinesNo underline. The terminal horizontal stroke acts as the flourish.No underlines. The long terminal stroke is the habitual flourish.Match
Placement and sizeSigned vertically in open background space to the right of the character. Medium size.References are signed in open areas of the artwork, generally horizontal. Orientation varies with the available space.Natural variation
Reproduction indicatorsNo halftone or dot pattern is visible at this resolution. Ink appears to sit on the surface, with natural skipping.N/ANot assessable

Examiner notes

Our card is a 2024 Mutagen Canister Kids sticker. That is the same contemporary era as the Nintendopes Open Edition references (R2–R6, R8) and the Magic Marker Art Slop Culture and Horrorible Kids references (R1, R7). All appear to be recent artist-signed sticker cards from roughly 2023–2024, so no meaningful era drift is expected. Differences in marker colour and surface (glossy sticker stock) are routine.

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.