I agree with a couple others that the best thing is finding a hole filler. Here is what I have found from the list. I like finding older and rarer so I am most proud of the low mintage
LWC. Volume is key but whenever anything from that list is found in a bank roll it is very lucky!
1 '09 V.D.B.
7
IHC (1882, 1896, 1903, 1904, 1905, 1907, 1909)
2
LWC (1926s, 1931d)
2
WAM (both 1998)