First off, THANK YOU to all of the people taking part in this thread. All of your comments are greatly appreciated.

I just received the helmet today, and the ABC sticker, in fact, is not correct. I have a mid-late '50s helmet which doesn't have a zip code for the ABC company (since this was before zip codes were invented) and a late '60s helmet with the ABC sticker showing zip code and a pattent number that was issued in 1965.

The ABC sticker in the Hank Aaron helmet conveniently has the bottom portion of the sticker removed (where the zip code would or would not be given), and the pattent numbers are scratched out/marked over by black marker. This sticker is most definately a later '60s sticker, if not later. Darn those fuzzy pictures on eBay!

I've contacted the seller and am asking for a refund. If I don't hear from the seller within 24 hours, I'll go through eBay's resolution center.

Again, thank you all!

Mel