Posted By:
Dan KravitzHow many of your e104's had the "Swift" stamp on the back? I went back and read the previous threads about the stamp, but nothing definitive. I have 3-4 with the stamp and 2-3 with out. I have never seen an e104-1 with the stamp and with out the "World Champions" overprint. The "World Champion" card must have been solely printed for Philadelphians. I would imagine no one else other than Philly would care. That would most likely put the "Swift" store in Philly. It could have been a collector too, but there are so many e104's with the stamp that I doubt they came from an individual.

I got this from an old thread.