donnoman,
Your serial number confirms it's a 6100 (130" wheel base and a 60" CA).
6A57O102417 breaks down as follows;
6A = 6100 Series
57 = year
O = Oakland Plant
102417 = unit number starting with 100001 (you have the 2,417th 6A out of Oakland).
Welcome to the Stovebolt!
Mike B
