Hey Pancho, thanks for the reply. Yes, I posted this in CCF and was confirmed by Steve that it isn't a Coleman preheater. After weeks of searching, I was able to buy a Coleman preheater from Ebay..but I'm wondering if someone here might recognize the above as a preheater for a different brand GPA...AGM, prentiss-wabers, etc..
It's new to me, but it could have been for heating sealing wax, which was used for sealing envelopes many years ago and the links below show relevant information. Buy Sealing Wax Heater - Square | Calligraphy Arts Buy Sealing Wax Heater | Calligraphy Arts Buy Ornate Sealing Wax Heater | Calligraphy Arts
Thanks for the links. I'm starting to believe that this one might not be for a GPA. Apparently, dentists would also use this type of torch.