What is one rookie card you sold or held onto too long that you took a big L with? I’ll go first…

2024 Topps Chrome Black Pete Crow Armstrong Auto Green Refractor /99.

I won this card in one of my first breaks. Ended up consigning it for $75 🥸 as I was still establishing my eBay store. Definitely have learned some good lessons since then, but this one hurt. However, very glad to see PCA mashing this year 🔥

What you got? It can be any sport!