You never know how long it takes until a “new”, yet unknown watch surface after many years. This happened quickly twice in the last weeks, with another addition into our database in shape of a Ref. 3646 / Type B with “Radiomir Panerai” sandwich dial and completely engraved “Kampfschwimmer” caseback.

Different to the Ref. 3646 / Type C with riveted plastic dial introduced earlier here (which included a month-lasting research for the family of the frogman), this rare Ref. 3646 / Type B “Radiomir Panerai” watch was introduced to us by the grandson of the frogman. Complete with the original strap and nickel-plated brass buckle, the watch with the small Oyster Watch Co hallmark on its inner caseback appears after 72 years with the original domed plexiglas, onion shaped “Brevet +” crown (Type 11) and Rolex Cal. 618 / Type 1 movement.

The caseback of the watch bears the initials “HE” of the first owner. The frogman belonged to the “Einsatzgruppe Heyden” which is engraved around the word “Kampfschwimmer” and the year of service, 1945. Lieutenant-Commander Günter Heyden was a founding member of the newly formed German commando frogmen (Kommando Spezialkräfte Marine) in the 1950’s.

The watch is accompanied with historic photos of the veteran as well as a very rare pay book (silmiar to only two others known which are made of the same material, see page 138 in our book “History1”) and which was issued to the members of the “Lehrkommando 700″ in the last months of the Second World War. Not enough rarity, there is a swordfish probation insignia (see page 802-804 in our book “History2”) and a nose clip which was used by the frogmen during the use of a small breathing apparatus (without face mask, see page 671 of our book “The References” 1930’s-1940’s and page 718 of our book “History2”).

Watches of the Ref. 3646 / Type B are featured in our book “The References” (first volume / 1930’s-1940’s) in chapter II.II on page 170-247.