With die polishing variations in EVERY YEAR
( exception being 58 ) of the 1950s you are
sure to find a 1959 with some lines shorter than others.
Keep looking !
Two really interesting dollars to be on the lookout for
1952 WL with the bottom line completely polished out ,
1956 Short Waterlines .
Agree with DBM on your 1959 though !
Appears to be slight damage