Mark McGwire signature opinion — 1989 Upper Deck #300
Got this in a trade back in the mid 1990s. No COA or provenance. Looking for opinions on whether the signature is likely genuine before I decide on PSA/DNA authentication.
Sharpie is intact, no smearing. Card itself is in NM condition.
Plan: if consensus is "likely real," I'll submit to PSA Dual Grading. If "likely fake," I'll keep it raw.
Happy to provide additional angles or higher-res if needed.
u/-ChesterCopperpot — 5 days ago