Posted By:
Robert AScott.
The business card theory is new and interesting. If you look at the stamp on the left with the goofy characters, it looks more like a kid messing around than a business card. I've seen that same stamp before on another e104. But, I hear you. It's probably the case that a person continued to consume the product giving the cards to his kid rather than using them as business cards.
Bill,
Philadelphia also seems logical. However some collectors think the e90-3 "chicago" set was issued in northern cal. due to the fact that large groups of e90-3s have been found there.
Why california, probably for spring training goers.