I have searched the web, and I can find several stamps that have RWB on them. However, those pages only mention that fact that the RWB backstamp is there. What does it mean?
It is an owner's handstamp. Unfortunately, I can not remember the name. The owner was a collector of plate strips and plate blocks. It is not the mark of the Weill brothers. They never used a handstamp. They would sign in pencil "R Weill Co" and only on rare occassions.
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