So I have done some research on this.....

The Tristar COA checks out....says this signing was done back in 1997 (must have been his rookie year).

I've heard some good and bad about Field of Dreams (which is where the seller bought it from and it also has a LOF COA) but I figured the Tristar COA supercedes that.

Two oddities....one is whether it's odd the Tristar COA is put on crooked?

Second, and I've been in contact with Tristar about this....but I looked the COA up in their database and then started plugging in COA numbers above and below this Duncan jersey. Seems like there was 10-15 Duncan jerseys signed at that signing in 1997....but then the COA numbers directly above and below these 10-15 are from like 2003. I asked Tristar if that was unusual for random stuff from years prior to have COA numbers randomly in the middle of a ton of other signed stuff from years later and they said sometimes they do that.

Thoughts? Duncan does not sign much.....

https://www.ebay.com/itm/124737178671?ViewItem=&item=124737178671