Tradera Auction; Reference 2447, sold at $13,200 (11061 euro / 105 100 kr). Seems to be the going rate for the large, waterproof Ref 2447 / 346 from the 1940s. Here's the listing — http://www.tradera.com/item/190112/287791503/heuer-2447-pre-carrera-vintage-chronograph-1st-gen- Jeff