The 1919 and 1920 pennies can be tricky. There's some information on the 1920 double dot and dot above at http://www.thesandpit.net/index.php...920dat_penny; if you search these forums you should also find some information on diagnostics for some of the others. Unfortunately there isn't a lot of readily available literature to help.
If you post some larger images of each individual coin though that would help.
If you post some larger images of each individual coin though that would help.






















