I have an authentic baseball-sleeve style tshirt from the closing of Winterland (New Year's Eve 1978) - Grateful Dead, Blues Brothers & NRPS. I purchased this at the concert myself. It is well worn and thin, but has no holes or tears. This is not the replica that shipped with the DVD in 2003, but the real concert T! I can't find one anywhere, so it's obviously pretty rare. BTW, photos are a bit dark - sleeves are blue, not black. Any guidance on pricing would be greatly appreciated.
I would think between $400-$600 with patience if sold at a fixed price. Dead shirts from the early 70s have fetched in the $1000 range. Are you going to post it on eBay?
Jimmy J
(Please note: Legit checks I do in this forum should not be considered 100% conclusive; I'm simply giving a gut reaction based on the limited information provided.)