I once asked the question of what were the earliest SW toys and someone linked me to these. They were a set of pewter figures from 1977. More details here: http://theswca.com/index.php?action=disp_item&item_id=13977
I hadn't heard about these other 'handcrafted' figures but the 1976 date seems strange. Star Wars was in production through 1976 and the very earliest cut (which Lucas privately screened for his friends and famously went down like a lead balloon) wasn't screened until Feb 1977. Add to that the 'Indiana Jones' date where these were apparently gifted, which didn't wrap until late 1980 (also why write 'Indiana Jones' on the COA, that addition to the title was added many years later - the original title was simple Raiders Of The Lost Ark).