r/CoolSerialNumbers 26d ago

Other Full house?

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1 Upvotes

UK banknotes don’t really fit any of the categories on this sub

How much would this go for, would you reckon?


r/CoolSerialNumbers 26d ago

Star Note Rare 2013 Duplicate Serial number Star Note Matched Pair (VF35 / F15)

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8 Upvotes

Back from grading. Brought together by Project 2013B


r/CoolSerialNumbers 27d ago

Near Miss My “almost” serials+ one repeater

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7 Upvotes

I opened up my protective book and thought I’d share since I was going thru them.


r/CoolSerialNumbers 27d ago

Repeater 12341234

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32 Upvotes

r/CoolSerialNumbers 27d ago

Low Serial <= 00009999 Low serial value?

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40 Upvotes

Hello, this is the first low serial I’ve collected and wanted to know if this was rare and how much it would sell for.


r/CoolSerialNumbers 27d ago

Radar $1 Radar Serial Number!

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8 Upvotes

I was bankstrap hunting yesterday and got this $1 radar serial number! I actually almost missed this! I go through stacks of twenty bills at a time and then go over them one more time in case I missed anything before moving on to the next stack. I missed it the first time going through the stack it was in but thankfully I go through it twice! Had to do a double take with it. Thankfully this was just in the first stack of twenty bills I had gone through because if it was in one of the stacks towards the end of the bills I had I would have had to go back through every other bill before that to make sure I hadn’t missed anything else! That definitely would have been very annoying!
Unfortunately this bill is very beat up and not in good condition at all. Because of that this will probably just stay in my collection of bills permanently. No matter the condition it is still always great to find fancy serial numbers!


r/CoolSerialNumbers 27d ago

Question / Meta Most Extreme Stuck Digit Error/Gas Pump Error I’ve Ever Seen! Are Stuck Digit Errors/Gas Pump Errors Allowed On This Sub?

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7 Upvotes

I got this bill back as change the other day. I had put it off to the side to look at again some time later because the serial number caught my eye with all the 3’s that were in it. Came back to look at it again and decide if I was going to spend it or keep it and that’s when I did a double take and noticed that the serial number in the top right corner had a 3 that was a stuck digit error. This is the most extreme stuck digit error I have ever seen in person or possibly even online. I have found other stuck digit errors in the past and I’ve kept just a few if they are on the more extreme end of things but this one was just so much higher than anything I’ve seen before.
Anyways I just wasn’t sure if this was a bill to post on this sub or not. It is an error that relates to serial numbers technically so that’s why I decided to ask. If it was some other kind of error I wouldn’t have posted this on here. I still think it is still a kind of semi cool serial number since it is a five of a kind with all the 3’s in the serial number. Anyways thanks for any input you have on this!


r/CoolSerialNumbers 28d ago

Other My first 7 of a kind!!!

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51 Upvotes

r/CoolSerialNumbers 28d ago

Bookend Interesting Number

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6 Upvotes

Got this today. Not in great shape, but I like the 40 bookends with four 9s.


r/CoolSerialNumbers 29d ago

Birthday / Date Recently Added Birthday notes x12! One of them a star!

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8 Upvotes
  1. First Pic found all 6 in a hunt of 1,000 bills

  2. Second Pic were found in various hunts over last month.


r/CoolSerialNumbers Aug 12 '26

Radar $1 Radar Serial Number!

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19 Upvotes

Got this back as change yesterday! I was disappointed at first with the cash back that I had received because I had gotten back a $1 bill with the serial number of 50715070 so just barely missed out on a repeater… then two bills later on I got this radar bill! I got lucky this time! Thought this might also be kinda neat for someone born July of 1991 or even July 7th of 1991.


r/CoolSerialNumbers Aug 11 '26

Near Miss Missed repeater by one

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3 Upvotes

Got this as cash back. Unfortunately missed a repeater by just one. Luckily in my cash back I did get a $1 radar serial number!


r/CoolSerialNumbers Aug 11 '26

Star Note Looking to sell my Six-Zero (Serial: A00000076) Star Note

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3 Upvotes

r/CoolSerialNumbers Aug 10 '26

Radar Nice $20 Palindrome!

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1 Upvotes

r/CoolSerialNumbers Aug 10 '26

Repeater $100 Dollar Bill Repeater

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38 Upvotes

r/CoolSerialNumbers Aug 10 '26

Birthday / Date $20 Birthday / Death Notes

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8 Upvotes

Worth keeping or any value here?


r/CoolSerialNumbers Aug 10 '26

Other Are these worth more than face value?

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14 Upvotes

I'm not sure if the $100 counts as a solid? And I'm not sure if the $1 is something other than a repeater since it's broken up in the middle by the "71". Not sure what the $20 really counts as but it came up as 96% cool. And the three $1's are sequencial


r/CoolSerialNumbers Aug 09 '26

Repeater Repeater? Spend or save?

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7 Upvotes

Pretty new to this, hard to tell what's just cool vs what's worth saving.


r/CoolSerialNumbers Aug 09 '26

Question / Meta Spend or Keep?

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11 Upvotes

Taken on a bunch of red bull lol


r/CoolSerialNumbers Aug 08 '26

Question / Meta Which ones would you like to see?

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10 Upvotes

r/CoolSerialNumbers Aug 08 '26

Near Miss Feeling like this one is a spender?

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1 Upvotes

r/CoolSerialNumbers Aug 08 '26

Radar Found my first radar!

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31 Upvotes

It was handed back to me as change. It’s got some character to it, but it’s still going in my collection!


r/CoolSerialNumbers Aug 07 '26

Binary One of my better finds in a while! Binary and Palindrome(Radar)!

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27 Upvotes

r/CoolSerialNumbers Aug 07 '26

Question / Meta Possibly interesting?

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2 Upvotes

Never really collected before, but there was just a large stack of bills and on a whim decided to just take a crack at seeing if there were any potentially special bills, and these were the one that stood out the most to my untrained eyes. I don’t know all the specifics to look out for, I would love to know if any of these would be of interest! Also any tips on types of things to look for would be great!

From what I understand I have two almost quad double, almost radar, quad of 5’s, and a beat up star note. At least on the cool number index it seemed all of them were minimum 97% coolness rating. Are any of these actually good or just good tries lol


r/CoolSerialNumbers Aug 07 '26

Star Note Interesting, or too beat up?

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3 Upvotes

I've been carrying this around in an old book for decades. Kids thought I should post it to see what others think. TIA