Never seen before, '81 gold ceramic IC's, very early
http://www.ebay.com/itm/DAVONG-SYST...830496?hash=item46432e7ba0:g:yu4AAOSwT5tWKA9e
http://www.ebay.com/itm/DAVONG-SYST...830496?hash=item46432e7ba0:g:yu4AAOSwT5tWKA9e
I saw that one too. I wanted to buy it but $40 postage to AUS stopped me!
The black slot cover makes me think it was intended for a Model A 5150.
Bobby.
The problem with these is the dip switch settings.