So a member on the BMX Museum found this Generation 1 (as indicated by the 'Cycles' head badge vs a 'Jamis' head badge) 5 speed Earth Cruiser with drum brake!!! So cool. The head badge puts it at '79-'80.
Thanks! I just got it a few days ago and put the S&M S.A.C. bars and AME grips on. I've cleaned the heck out of it over the past day or so. It has the Sand Jam shell tread tires but they're pretty rotted.Whoa! Very nice. Based on the sprocket It’s probably ‘82 or later, so 1983 sounds spot on.