The problem with printing plates for federal currency is its quite possible that its illegal to own, therefore it makes having a big auction for it rather difficult as the secret service would show up and the party would be over :)
But I'd imagine the value for it if it was genuine would be incredibly high. After all, the notes themselves sell for well over $1000 even in worn condition so I'd imagine a printing plate would be worth even more, but before you decide to sell it, I'd make sure that you can legally own it so you don't end up with it being taken away from you by the secret service.
Due to the dubious legality of collecting federal currency printing plates there's really no auction records to show how much they'd be worth but it is certainly valuable.
It's a plate index number. The Bureau of Engraving and Printing puts small numbers and letters on all bills to indicate where the bill was located in the large plate that prints multiple bills at a time, which plate in a set was used, and (since 1991) which printing facility produced the bill.
Assuming the bill is the same size as modern bills, it was printed in Washington by the Bureau of Engraving and Printing. The letter is most likely some kind of flag or plate indicator.
It looks like a date but it's actually a serial number for the printing plate that was used to produce that particular bill. All bills have them. Due to changes in the printing process plate serial numbers on modern bills are usually no more than two digits.
It's actually called a silver certificate, and the plate number doesn't affect its value. Please see the Related Question for more.
It's a number indicating which plate was used to print the bill.
Prior to 1991, all US bills including silver certificates were printed in Washington, and the Bureau of Engraving and Printing facility. A second plant was opened in Fort Worth that year. Bills printed in Fort Worth carry a tiny "FW" next to the plate position indicator on the front.
The number is called a plate serial number. All bills have them, not just silver certificates. Bills are printed in groups using large printing plates and sheets of paper that are then cut apart into individual notes. The serial number indicates which plate was used to print a specific set of bills. The front of each bill also includes a plate position indicator that tells where it was located in the group.
Please see the link below. E 647 is a plate number that does not affect the bill's value.
Please see the link below. The tear and folds put the bill in the lowest price category, I'm afraid. K8134 is a printing-plate number and has no effect on the bill's value.
B is the highest series letter on a 1957 $1 silver certificate, so you may be looking at a plate indicator or some other marking. In any case 1957 $1 SC's are not rare; in average condition they generally retail in the $1.25 to $2.00 range regardless of series letter.
B is the highest series letter on a 1957 $1 silver certificate, so you may be looking at a plate indicator or some other marking. In any case 1957 $1 SC's are not rare; in average condition they generally retail in the $1.25 to $2.00 range regardless of series letter.
That is a very common note. The F535 is just the plate number and it does not affect value. Standard issue 1957 $1 silver certificates are worth about $1.75 in average condition. Packs of 100 new notes sell for around $600.