A beautiful example we found in Sweden. Heinke made very few 12 bolt helmets with the round corselets, some say as few as 150 others say less than 300. It features matching numbers 32H.

Even more unusual is the fact that the makers name is cast into the corselet, like the more common 6 bolt, whereas on the 12s it is normally an oval makers plate. This suggest, in our opinion, this is an early example of this very rare breed! Diving collectables are better than money in the bank!