
1911 c55 hockey
Would trade my raw Mallen and Ronan for players I don’t have - condition not super important.

Would trade my raw Mallen and Ronan for players I don’t have - condition not super important.
eBay member since 2001, 99.9% feedback, with 8.2k items sold so certainly not new, but stuck on this one.
Sold an item ($70 hat) and the buyer open an item not received claim.
Tracking (USPS ground advantage) said the item was delivered, in my experience this is all it takes.
Reuplaoded tracking and that’s usually it, have had this issue come up a dozen times.
eBay sided w buyer and said I didn’t provide valid proof of delivery.
Of course I’d like to appeal as I don’t want to eat the $70 when I did nothing wrong, but I can’t even find the case to do so.
Thoughts on where to go? Anything I try to do online just keeps sending me through an ai loop of nonsense. TIA.
Grew up on the 1999 / early 00s era. What would something like this be worth today? Having a tough time finding much info - apologies if the wrong place to ask.