Variety one minted from 1838 to 1853 had no motto above the eagle, with drapery at the elbow, except for the 1844 mint.
Variety two has arrows by the date, and rays around the eagle for 1853 only.
Variety three has arrows at the date, but no rays from 1854 to 1855.
Variety four has a motto In God We Trust above the eagle, from 1866-1873.
Variety five, has arrows at the date 1873-1874. From 1875 to 1891 Variety four resumed.
The most valuable Sitting Liberty quarter is an 1873CC, but any found with a mint mark in fine condition could be worth some bucks. On the wish list.