I've got one of these too! Mine has the original accessories box, instruction booklet and shop brochure, originally purchased from Regal Sewing Machines in Melbourne on 18 January 1963... The brochure says you can get the Favorit 640/2 (automatic zig-zag with automatic buttonhole), 642/1 (zig-zag) or Varia 644 (plain sewing) with a choice of Standard Cabinet (treadle or motor), Deluxe Cabinet (motor) or Swedish Table. Mine's in the Swedish Table, for an "Attractive contemporary design with electric motor". The Favorit 640/2 is the most expensive machine listed in the brochure... "starting at £130". I can't wait to get it back from the repairer and try it out!