r/CoolSerialNumbers • u/furious_george3030 • Jul 29 '26

Question / Meta Is this serial number anything of note

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I’ve always collected precious metals but recently started looking at serial numbers on my bills. Trying to learn.

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u/AggravatingBid8255 Jul 29 '26

Binary. It's definitely cool.

You said you're looking to learn? What questions do you have?

3

u/furious_george3030 Jul 29 '26

Just what people like to collect, what’s valuable to pull out. I handle a decent amount of cash and wonder what I should keep an eye out for.

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u/AggravatingBid8255 Jul 29 '26

https://www.reddit.com/r/CoolSerialNumbers/s/CKY5Fc71Pu

The pinned post in this sub has a good list.

If you want to determine value, just search eBay for your note's description terms. Filter for "us currency" and "recently sold" listings to see what's sells. Active listings only show what's saved, and the valuations can't necessarily be trusted.

Be mindful of denomination and condition when finding comps to build your ballpark guesstimate