The following serial numbers hold value, in descending order: Single Digits: 00000001 or 00000006 Solids: 44444444 Ladders: 12345678 or 98765432 High Serials: 99999999 Binary Repeaters: 01010101 Super Radars: 30000003 Reapeters: 43434343 Radars: 34677643 Assuming the note is Choice Uncirculated or better, a single digit serial can fetch a few hundred to a few thousand (for #1l. High serials are several hundred. Solids and ladders are a couple of hundred. The rest are a few dollars over face value.
You could check here with Jim Futrell at his website Tickle Your Fancy and check out what he feels has value over face. http://www.tickleyourfancycurrency.com/index.htm
