rod222: Thanks for your continued efforts to help resolve my question. Very much appreciated.
While there are some similarities in the printing style between my card and the Fleetwood/Knapp FDC card, the quality of the Fleetwood card is far superior. I have no idea whose signature (E.R. Grove?) is on the Hipstamp card (also cross posted on eBay
). My copy of the Fleetwood FDC does not have this signature; none of the others listed on eBay
have it, either. I did some searching to see if Grove was perhaps a postmaster but the USPS Postmaster Finder shows no one with that name. Googling also produced no relevant information.
Again, thanks for your help. The mystery continues.