1909 S VDB

A dealer I know purchased a 1916D Mercury dime from someone. Sent it in for grading since he, a 50 year dealer, knew it was real. It came back as a fake. He then asked other dealers what they thought. All said real. HMMMM.
Different person I knew purchased a 22 Plain Lincoln Cent that was cerified by a sort of unknown TPGS. He recent it in to another TPGS just to make sure and it came back fake.
I know you said that dealer said fake but before I'd throw in the towel, I'd try a few more dealers or even spend a few dollars with PCGS just to make sure.
To many people blurt out fake and really don't know.