Good Morning, @roby03 , That's a lovely old SVEA 123! I'd say, without seeing more close-up photos, that yours is a version 2. The original SVEA 123 had a slightly different setup in the fuel cap, regulating key, and placement of the key in the windscreen. However, all the Sievert versions are the best of breed, IMHO, and you did well to score that one, Sir! Thanks for sharing it here!! Take care, and God Bless! Every Good Wish, Doc
Pictures of the box and instructions dated 1959. This is how I purchased this stove with all parts. Roby