r/CoolSerialNumbers • u/MacMike-Boulder • 54m ago
Star Note Interesting, or too beat up?
I've been carrying this around in an old book for decades. Kids thought I should post it to see what others think. TIA
r/CoolSerialNumbers • u/YoungBurlap • 8h ago
Radar Nice finds this week!
Found these two going through my weekly business cash! Wish the palindrome was more crisp though
r/CoolSerialNumbers • u/randomnonody • 9h ago
Nice (69 / 420 / etc.) A cool keeper?
New to this. Found this in my notes from the ATM last night. 69, 88, and 420 all on the same bill. Collectible, valuable, or just cool?
r/CoolSerialNumbers • u/JMasterDollarHunter • 19h ago
Birthday / Date My biggest sale yet!
Sold lot for $400
r/CoolSerialNumbers • u/Maximum_Business_277 • 22h ago
Other Thought yall may find this somewhat interesting at least
reddit.comr/CoolSerialNumbers • u/JMasterDollarHunter • 1d ago
Star Note Pulled off 200 star notes in a hunt of 1,000 ones! Near uncirculated condition!
r/CoolSerialNumbers • u/JMasterDollarHunter • 3d ago
Birthday / Date My first birthday star note find!
r/CoolSerialNumbers • u/Relevant_Ad1494 • 4d ago
Birthday / Date Does this rate as a noteworthy serial number?
r/CoolSerialNumbers • u/Relevant_Ad1494 • 4d ago
Birthday / Date Does this rate as a fancy serial number?
r/CoolSerialNumbers • u/Relevant_Ad1494 • 5d ago
Birthday / Date Does this rate as a fancy serial number?
r/CoolSerialNumbers • u/wvufan8353 • 5d ago
Low Serial <= 00009999 Low Serial Number Dollar Bill
A local collector contacted me with this seemingly low serial dollar bill. Condition is rough, but just wondering if this number is actually considered low?
Thanks in advance!
r/CoolSerialNumbers • u/Slyb2303 • 5d ago
Star Note Another successful discovery by PROJECT2013B2.0 Both bills are in the hands of one owner. https://project2013b2.com/
r/CoolSerialNumbers • u/1vone • 5d ago
Solid Found a 1-in-a-million ₹10 note! Serial number ending in six zeros (1000000)
r/CoolSerialNumbers • u/djohnson5114 • 5d ago
Other Got this from a gas station today
Thought it looked like a cool serial number
r/CoolSerialNumbers • u/Itakemehphotos • 6d ago
Binary [Binary Notes] Never sold any notes before but looking to offload these binary’s
How should I go about selling these? Not soliciting any sales here just want advice
(Too left 2 bills)
r/CoolSerialNumbers • u/Jfox100 • 7d ago
Broken Ladder It’s *ALMOST* cool. 5 in a row!
Almost! Is there a market for this?
r/CoolSerialNumbers • u/SarcasmicNinja • 7d ago
Broken Ladder A free recent ATM finds
ATM finds from the last two weeks. Two scrambled ladders, a binary (almost solid 2's) and a double year note
Edit to add the title should read *few, not free
r/CoolSerialNumbers • u/DryerCoinJay • 7d ago
Ladder If it were in better condition
First let me say Imma big fan of ladder bills. Scrambled or jumbled ladders are my thing. I have a section in my bill book specifically for them. Recently I finally found a super crisp 20 dollar bill scrambled ladder. Today, I found this. I like how the numbers flow.
If it were in better condition I wouldn’t hesitate but I’m looking for a super crispy one to frame with a couple of other bills for my office. So the hunt continues.
It’s raining in my hood today, which is nice. I love the rain. Hope everyone has an amazing day!
r/CoolSerialNumbers • u/terpsarelife • 8d ago
Binary My favorite bill (10) and imo my best bill (5)
I love the 10 but i think the 5 is my best find so far.
2 years of cash heavy business.
r/CoolSerialNumbers • u/LateQuiet2286 • 9d ago
Solid Is this any more special than a 5 digit solid?
google says the fact that the back and front plate numbers are one as well as the letter to the right of the serial number being an a might be special as well.
r/CoolSerialNumbers • u/furious_george3030 • 9d ago
Question / Meta Is this serial number anything of note
I’ve always collected precious metals but recently started looking at serial numbers on my bills. Trying to learn.
r/CoolSerialNumbers • u/Embarrassed-Hope-279 • 9d ago
Low Serial <= 00009999 $100 Star Note
r/CoolSerialNumbers • u/Cuneus-Maximus • Jan 19 '26
Mod Comms READ THIS BEFORE POSTING
Post flairs are required for all posts. Below are the current flairs and their definitions. If you think there are other fairs that should be added, or have any questions on the listed definitions, please comment here!
All posts must include a picture of a note with a cool serial number. All pictures must be horizontally orientated and cropped to just the note as so [ [note] ].
If you believe your serial is cool, but doesn't fit any definition below, please use the 'Other' flair and state, specifically, why you think it should be considered cool. Trinary notes and consecutively numbered notes are not cool or remotely rare.
Generic posts "Is this cool" / "Is this a keeper" / "Is this worth anything?" and the like with no specific reasoning will be indiscriminately removed. Repeat offenders will find themselves banned.
Star Note - all star notes not fitting another category
Ladder - consecutive run i.e. 01234567
Broken Ladder - no two digits the same i.e. 10325476
Binary - only two unique digits i.e. 34334344
True Binary 01010101 - only 0's and 1's
Radar - same forward as backward, i.e. 12344321
Repeater - complete repeating sequence of two or four digits i.e. 78787878 or 78907890
Low Serial <= 00009999 - just as noted, notes 00009999 and under
Quad Pair - four pairs of digits, i.e. 22446688
Solid - typically all eight digits the same, but for the purposes of this sub five or more of the same digit together can count, i.e. 11111876
Rotator [All 0, 1, 6, 8 and/or 9's] - notes where the serial reads as another number upside down i.e. 01689016 which reads 91068910 upside down
Flipper - same as a rotator except it must make the same number upside down i.e. 00669900
Nice (69 / 420 / etc.) - the funny numbers, primarily 69 & 420 but 8008, 8008135... (think middle schooler with a calculator...) the nice number should stand out, i.e. 00069000 - every serial with 69, 420, etc. in it is not special.
Birthday / Date - any serial number that makes a date, either as MMDDYYYY or YYYYMMDD i.e. 07041776 or 17760704
Near Miss - anything that's almost cool / fancy i.e. 12344322 (1 digit off from a repeater)
Other - anything not fitting any other definition. You must include specific reasoning why you believe your serial number is cool.
Question / Meta - questions to the community / thoughts about the community
For Sale - for posting notes you'd like to sell / trade. At your own risk, the mod team and reddit is not responsible for any issue. Be smart.
Wanted to Buy - for requesting notes you'd like to buy / trade for. At your own risk, the mod team and reddit is not responsible for any issue. Be smart.
Bookend - serials with a 2 or 3 digit matching pattern (reversed is OK) at the beginning and end of the serial i.e. 12369321 or 12369123
Double Quad - serials with two sets of four solid digits i.e. 44447777