A nice circulation find Calzone.
What you have first is a 'binary' note. This means it has two digits 8+6 only. A true binary note is where the serial numbers can only contain 1s and 0s and true binary's tend to be more valuable. Condition also always plays a factor ultimately in determining value. Nowadays, binary serial numbers have been extended to many types, and if the serial numbers consist of two different digits like yours then they are also called binary but have a lower value than a true binary. These will tend to sell more to casual collectors on places like
ebay for a few dollars over face value even in circulated condition as mentioned by SteveinTampa. You can check
ebay sold listings for value (not what it listed but unsold) as they are regularly sold there so doesn't require lots of research.. The note also has 5 of a kind 8's which may appeal again to some casual collectors (but not 5 in a row where they are all together like 88888123. Typically a 7 or 8 of a kind is where serious collectors get interested.
I made a post about different types of collectors and 5 of a kind here:
http://goccf.com/t/439875#3788062 Its actually a great way to get into collecting these type of notes and recently its been reported that fancy serials are getting quite popular on
ebay even for the basic ones like that so don't necessarily dismiss them until you check. I prefer the low end ones on $1 over $20 as they are much easier to sell to impulse casual buyers if that is what you desire vs creating your own collection.
Ignore the coolness index for determining value, and instead just learn what types of fancy serial numbers have value to others and what to look for. Heres just a few of them to get you started but there are others.
https://collectiblescurrency.com/bl...rial-numbers