First, there are a lot of factors that come into play when determining the value of currency.
Condition, the type of error or variety in the piece, the aging of the bill or coin, and so forth. With this in mind, just having a collectible or fancy serial number does not mean that old, torn bill is worth much. Now, if you are able to maintain higher condition of the bill and the item has a very unique serial number, you could be sitting on thousands of dollars!
Also, the denomination of the bill is factored into the value as well, but plays less of an impact than you would imagine. The higher value bills will be worth a comparable face- value increase than lower face- value bills.
So, a $100 bill with a radar repeating serial number will be worth a similar increase to worth over its original $100 face value as the $5 bill with a radar repeating serial number. Of course, both bills would need to be in comparable condition.
However, the same fancy serial number on a $100 bill won’t make it worth $2,500. A $100 bill is already worth $100, so it takes a really important serial number to add a lot of extra value there. It would be very costly to collect $100 bills just because of their serial numbers.
Star Note Bills with Fancy Serial Numbers
Solid Serial Number – All One Number
Low Serial Number – Two Digits or Less
Trailing Zero Serial Number – Seven Zeros after Number
Ladder Serial Number – Sequence of Consecutive Numbers
Radar Serial Number – Reads the Same Both Ways
Flipper Serial Number – Reads the Same Upside Down
Repeater Serial Number – Two Numbers Repeated
Binary Serial Number – All Zeros and Ones
Stand Alone Serial Number – Number Surrounded by Zeros
Here are examples of each: