Assuming you're talking about "regular" 2716's...yes, they are the same.
A Texas Instrument 2716 is different (TMS2716). Everyone else's 2716 is the same. Texas Instrument made the 2516 to be compatible with everyone elses 2716. Go figure.
I recently organized my chip stash and man did I stock up on those suckers from somewhere! I think I jumped on a sale arcadechips had or something because I have tons of them now.