The 1921 E121 cards are found with a variety of different back advertisements some more difficult to obtain than others. The most difficult however are the cards advertising the Herpolsheimer's Boys Fashion Shop. The reason for this is that just 69 or 70 cards from the issue are known to exist no more than one example of each subject. The cards were discovered all together in late 2004 auctioned individually on eBay and had previously been unknown to the hobby. Such a discovery is an earth-shattering piece of hobby news for sure and the demand for the cards was strong among advanced collectors. Each of the cards auctioned were in EX to EX-MT condition with one exception: each and every card had a dollar figure notated in pencil on the reverse. The purpose of these notations is unknown: perhaps they were dollar figures used by the Herpolsheimer's clothing store in Grand Rapids Michigan as some sort of coupon redemption. Perhaps they were the price the cards were sold for to the original eBay seller in some flea market or garage sale. There is unfortunately no way to know. What we do know at this point is this: 1) There is only one example of each subject in the E121 Herpolsheimer's set meaning each card is one of a kind. 2) If a card is present in both the PSA and SGC population report it's because the card was crossed from one grading company to another (examples are found graded by both companies). 3) Any card grading higher than GOOD by SGC or without an MK qualifier by PSA has been altered by having the pencil marking removed from the reverse. Since the cards were scattered throughout the hobby by being individually sold on eBay the number of cards discovered is unknown: some suggest 69 others say 70 and still others suggest that the number is actually 80 coinciding with the E121 Series of 80 set. It is unknown how the cards came to exist: were they proof cards presented to the He