2006 $1 One Dollar Bill 6 5 4 3 2 1 Descending Ladder Repeater Note 65432165

  

Six of eight numbers in a row repeat. The broken Descending Ladder / Repeater then repeats the 1st two numbers as you can see. I think this is called a WRAP AROUND LADDER? However, I'm no expert so please rely on photos.

The serial number is K 65432165 F. 6 5 4 3 2 1 6 5.