I have never sent paper off for grading. Are these worth grading? I have some others I pulled from fresh fed bricks.
The 15555551 is known as a Radar which is a Fancy Serial Number The 15555555 is just a Cool serial number I would just send the 1st one.
I agree with Paddyman98; send off the super radar 15555551; the other ?? I suggest look through some recent Lyn Knight auctions as there were many "fancy serials" up for auction; and maybe even Heritage
Both are nice but as Paddy said, the bill on the bottom is a radar note and Rick added that both are binary notes. Both are in great shape. I'd definitely send the radar note in for grading. Maybe the other but you said you had a other bills pulled from fresh bricks. I'd consider what is in those bricks before doing anything.
One of the fancy serial number sites says 7 solid numbers in a row is good. http://www.coolserialnumbers.com/FancySerialNumbers.aspx
idreamofgreenie: thanks for showing off these notes. I always enjoy seeing cool numbers. since you shared a radar and 7-in-a-row let me also show my notes to you. you may or may not have seen it but here they are:
^ the horseblanket I am sure stood out even then with all the zeros Here are my other ones. Several years ago I just asked to see all the new bricks still sealed. I would check the first bundle looking through the shrink wrap to quickly determine if there was any potential. I came up with these out of 10K. All the while being really polite and ensuring there were no other customers in line.