Thread: M116 Blue Proof Blank Back
View Single Post
  #4  
Old 11-13-2023, 11:09 AM
bnorth's Avatar
bnorth bnorth is offline
Ben North
Member
 
Join Date: Jun 2013
Location: South Dakota
Posts: 10,603
Default
Proofs can be as simple as a blank back but all blank backs are not proofs. Many proofs have a design difference than the finished card. Some have the marks like the Mathewson.
Reply With Quote