Post Your Cool Serial Numbers Over 99%

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2017 US $1 Banknote True Binary
99.42%-Coolness Index
extremely cool-Rating

163 (octal), 115 (decimal), 73 (hex)

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Impressive!

Recently organized my "Fun" Serial Numbers.. I don't call them 'cool' or 'fancy' because I only collect for fun and keep circulation finds with serial numbers I find interesting regardess of condition. I didn't actually check them on the "Cool-O-Meter" so not sure whether they are officially "cool" or not but if I like it, then it's cool :)

These are my favorite circulation finds















I like this one because it's a Radar Note but also reads as a Radar Note upside down (though, unfortunately not a Flipper)





And these two pairs are my top favorite notes but have to confess, only one of them is a circulation find.. I don't purchase notes for their serial numbers, just enjoy the thrill of the chase in finding them but knew I was never going to find matching numbers in circulation, and just wanted a pair in my collection






This pair came together because many years ago I found one of them in circulation and then about a year or so ago, I just happened to see someone on Reddit post the reverse and had a feeling it might go on sale some day, so I saved a Search and lo and behold, one day I got a notification that it was for sale and just had to get it.. I like to refer to them as a Double Super Binary Radar Repeater (a term I just made up for this post):)