The details are the 1908 Cent has a mintage of 32,326,367, approximately. It would sell for about $5 to $10 in that grade. Although a rather common coin, still almost all
Indian Head cents are somewhat valuable.
The 55S again too is rather a common coin with about 44,610,000 minted. In AU (Almost Uncirculated or About Uncirculated) it would sell for less than one dollar.
However, since you found them and spent nothing for them, great find.