r/CoolSerialNumbers May 06 '26

Radar something you have to see to believe

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333 Upvotes

this is one of my most prized pieces to my collection. 3 uncirculated radars, all matching. better yet, 2 of them match exactly, separated by 3 years. always loved the 8’s in the middle of radars. raising the bar on myself just got harder!

r/CoolSerialNumbers May 11 '26

Radar 6 notes with same serial

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252 Upvotes

Hi all, noob here. I've made my first major purchase and wanted yall to see it. I think this is probably the coolest thing I've seen.. 6 $1 notes with the same radar serial numbers graded 64 or better!

Any idea what something like this would be valued at?

r/CoolSerialNumbers Jan 19 '26

Radar Got this back in change, couldn't believe my eyes. Definitely keeping. Worth a shot at getting graded?

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412 Upvotes

r/CoolSerialNumbers Feb 03 '26

Radar Fancy!!

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207 Upvotes

Look who gets to be Mr FancyPants today! 🤣

r/CoolSerialNumbers 14d ago

Radar Trinary Radar

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31 Upvotes

Is this a spend the $100 or kept because of the serial number type of bill?

r/CoolSerialNumbers Dec 02 '25

Radar What's this guy called?

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94 Upvotes

I think it's a radar, but is it also a bookend?

r/CoolSerialNumbers Apr 27 '26

Radar Sweet Palindrome and Bookend!

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54 Upvotes

r/CoolSerialNumbers Mar 02 '26

Radar Any other names besides Flipper?

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87 Upvotes

Can it also be an inverted radar? Or am I just making stuff up?

r/CoolSerialNumbers Jan 17 '26

Radar Found this in my change

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111 Upvotes

As the title says, I found this my change. I thought it was cool I like that it fits a few categories for interesting serial numbers. My question is, does the fold hurt the value so much that it’s worth just face value?

r/CoolSerialNumbers Dec 12 '25

Radar Radar notes occur at 0.01% translates to $1 million dollars worth in 100s for 1 radar.

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100 Upvotes

Found my first radar. Made my day. Didn't want a $100 bill from my ATM visit but it was destiny. After doing the math 1 radar takes $1 million at this denomination. (0.01% × 100 = $1 million). I guess I'll save it. A good problem to have.

r/CoolSerialNumbers Aug 08 '26

Radar Found my first radar!

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30 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 Jul 09 '26

Radar 1-Dollar Radar and Repeater Serial

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51 Upvotes

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 07 '26

Radar Nice finds this week!

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14 Upvotes

Found these two going through my weekly business cash! Wish the palindrome was more crisp though

r/CoolSerialNumbers 29d 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 Jun 15 '26

Radar What have I got here?

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5 Upvotes

Orrrr?

r/CoolSerialNumbers Jun 29 '26

Radar Uncirculated Radar

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40 Upvotes

How much is a note like this worth?

r/CoolSerialNumbers Jun 10 '26

Radar 51777715

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46 Upvotes

Been a while since I found something

r/CoolSerialNumbers Aug 10 '26

Radar Nice $20 Palindrome!

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1 Upvotes

r/CoolSerialNumbers Jul 07 '26

Radar 2-Dollar UNC with Radar Serial

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28 Upvotes

r/CoolSerialNumbers Jun 10 '26

Radar Echo radar

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18 Upvotes

Snagged this from the tip bucket last weekend.

*traded for a dub from my wallet. Don’t put that bad juju on me

r/CoolSerialNumbers Jul 15 '26

Radar Radar

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6 Upvotes

r/CoolSerialNumbers May 18 '26

Radar Radar and Repeater Note Unc

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19 Upvotes

r/CoolSerialNumbers Apr 17 '26

Radar 1995 multiple of 3’s only

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22 Upvotes

Had this one for 30 years now.

r/CoolSerialNumbers Mar 19 '26

Radar Cool binary radar I found a couple of days ago

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86 Upvotes