With whats left of a Bragg Industries sticker on the rhs and a good match to the SMH 1973 advert my recent find has to be a close relative of irb73's purchase. Similar snorkel and throttle layout and tell tale red paint flakes on the motor mount and very similar baseplate. Motor details are KAV 73 spec no. BJ6648A , SERIAL NO. Y8 94572.