1875 Indian Head cents- I am currently over half way to completing a roll
1875 Seated Liberty halves- I am currently at the half way mark for a roll
1861-O Seated Liberty halves- this will be a tough roll, I am currently at 6
I hoard the 1875s because that is my centennial birth year and 1975 coins are quite boring

The 1861-Os represent the Civil War like no other coin- the majority were either minted by the State Of Louisiana after succession or the by the CSA after Louisiana joined. It is the only US coin struck by another government and a fascinating part of history.