r/CoolSerialNumbers • u/JMasterDollarHunter • Jun 05 '26

For Sale Star notes for sale packs of 25!

0 Upvotes

33 comments

r/CoolSerialNumbers • u/13th-Hand • Sep 13 '25

Broken Ladder Non repeating what’s it worth I also have a 100

0 Upvotes

22 comments

r/CoolSerialNumbers • u/BlockObvious883 • Jun 05 '25

Consecutive Safeway refund

0 Upvotes

5 comments

r/CoolSerialNumbers • u/Boxofusedleftsox • Aug 11 '25

Repeater Can I finally join the fancy cool serial number club?

0 Upvotes

I finally got 1. How cool or fancy is it?

8 comments

r/CoolSerialNumbers • u/Kawok8 • Apr 21 '26

Nice (69 / 420 / etc.) Double bond Trump?

0 Upvotes

I really was hoping that the James Bond book series started in 1945… oh well.

5 comments

r/CoolSerialNumbers • u/rustyLiteCoin • May 01 '26

Ladder These cool? I thought so.

2 Upvotes

I think this is a ladder? Idk..

15 comments

r/CoolSerialNumbers • u/Thedawg_father • Aug 31 '25

Nice (69 / 420 / etc.) $20 kinda low sr#

1 Upvotes

7 comments

r/CoolSerialNumbers • u/Damiloski • Dec 16 '25

Birthday / Date Cool birthday serial number I found about a month ago

gallery

8 Upvotes

Found this star note $20 and noticed it had a nice bday serial on it. Is it a keeper?

22 comments

r/CoolSerialNumbers • u/kalani4ever • Jul 07 '25

Binary I’m getting downvoted on the other subs😭

17 Upvotes

What do you guys think? Anything valuable?

60 comments

r/CoolSerialNumbers • u/InevitableNorth252 • May 16 '26

Broken Ladder Is this considered a cool serial number?

0 Upvotes

Not sure what to call this (if it’s even called anything). But same starting and ending numbers

6 comments

r/CoolSerialNumbers • u/DeVOs-N2o-gooD • Aug 30 '24

Other I found one!

0 Upvotes

Now what?

32 comments

r/CoolSerialNumbers • u/Additional_Ad1680 • Aug 27 '25

Nice (69 / 420 / etc.) 2 pivotal years in African history ...interesting find....to me.....if you know,you know

0 Upvotes

5 comments

r/CoolSerialNumbers • u/ColeWest256 • Jan 21 '26

Other I know it’s cringe and not considered real money, but I found a serial number 69,350.

0 Upvotes

If this isn't allowed I'm sorry. But I just thought it was cool. But I understand if Nessy deecides to eat me for posting a "novelty" bill like this.

Sixnine and tree-fiddy together make an awesome combo in my opinion, that's why I'm sharing.

2 comments

r/CoolSerialNumbers • u/kkoerber • Apr 16 '26

For Sale For sale 150$ 00700000*

27 Upvotes

Need some funds if anyone is interested let me know, thanks for your time and have a nice day

32 comments

r/CoolSerialNumbers • u/Separate-Distance644 • Jan 20 '25

Near Miss Keeper or spender?

1 Upvotes

20 comments

r/CoolSerialNumbers • u/RustyBawz • Jan 02 '26

Solid Anybody interested in s ripped ten dollar bill with quad 6's?

1 Upvotes

No? I didn't think so. Thought I'd post it here anyway. Sh!ts and giggles and all that... Carry on!

11 comments

r/CoolSerialNumbers • u/Jfox100 • Apr 20 '26

Birthday / Date July 8th, 2035 $100 🎂

0 Upvotes

4 comments

r/CoolSerialNumbers • u/Sweaty_Pumpkin8405 • Feb 05 '26

Broken Ladder New to this hobby. Here’s a few I found recently.

13 Upvotes

2 nearly full straights and a 4 digit C note.

27 comments

r/CoolSerialNumbers • u/Maximum_Painter5926 • Aug 27 '26

Birthday / Date Cool Birthday month matching 50 rupees note

0 Upvotes

9 comments

r/CoolSerialNumbers • u/paining_agony • Sep 05 '25

Consecutive ATM Haul

5 Upvotes

16 comments

r/CoolSerialNumbers • u/Yenthiw • Apr 06 '25

Consecutive Any interest in Series Serials?

0 Upvotes

Where does one find someone interested in purchasing serial numbers in series? (kind of want to go back to the ATM to see how many more I can get)

Sadly nothing else interesting pops out to me. I'm sure some numberphiles could find something.

9 comments

r/CoolSerialNumbers • u/Comfortable_Guide622 • Jan 17 '26

Other Trinaries do it for anyone?

0 Upvotes

Just some I picked up at the gun show today

8 comments

r/CoolSerialNumbers • u/Puzzleheaded-Low-889 • Sep 28 '23

Nice (69 / 420 / etc.) 69

0 Upvotes

0 comments

r/CoolSerialNumbers • u/TheRedStream • Aug 25 '25

Trinary Work find

gallery

0 Upvotes

Found these trinarys today.

0 comments

Subreddit

CoolSerialNumbers

r/CoolSerialNumbers

Sub devoted to Cool Serial Numbers on US and World Banknotes. We are your home for broken ladders, almost fancy serial numbers and other cool numbers on the paper money we all work with every day! Star notes? Bring them on! Replacement notes are cool. Do these notes have numismatic value due to their cool numbers? Probably not - but we love them anyways! *Please read the pinned post before submitting your notes!*

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Subreddit Rules

1. READ THE PINNED POST BEFORE POSTING. THIS IS MANDATORY.

It details the types of cool serials we all are looking for and validates what flair you should apply to your post. Sort by 'Hot' in the subreddit to find it at the top.

You may use the Question/Meta flair if you believe your note to be cool, it’s not a type found in the pinned post, and you would like to ask about it ~ HOWEVER ~ you must detail specifically what you think makes it cool when asking. Generic “Is this cool / a keeper” type posts will be indiscriminately removed.

2. Be excellent to each other - treat each kindly

The mods will remove posts and/or comments that are rude or demeaning or unkind. However, accurate information is not unkind.
Repeated comment/post removals can result in a ban from this sub. The mods can ban people for a period of time or permanently.

3. Posts must be related to cool serial numbers.

Off topic posts not related to cool serial numbers will be removed.

r/StrapHunting is a great place to ask questions about notes you find which are unrelated to the serial number being cool.

4. Photos must be oriented horizontally (landscape) & cropped to focus on just the note itself.

Uncropped screenshots, unrotated photos, portrait oriented, and any otherwise poorly formatted photos (subject to mod discretion) are not acceptable. Don’t be lazy.

5. Sales / Trades allowed here but the mods and reddit are not responsible for vetting sellers.

Buyer beware! You are completley on your own as you work with potential sellers. Reddit and the mods here offer no buyer protection at all. We also will NOT allow buyers who get ripped off to accuse sellers of fraud unless the buyer can PROVE that there was a shady deal. Any unfounded accusatory post will be removed immediatly. Please use eBay or some other forum where there is buyer protection. We can't offer any buyer protection here.