Kriegsmarine U-boat front clasp in silver by Schwerin Berlin. Zinc construction with integral hinge and crimped in catch. Maker and designer marked on the reverse. So called second pattern clasp. Very good to excellent condition with all silver finish present. Denazified example. No repairs, no damage. 

Despite of the denazification for post '45 wear, still a remium piece! Extremely hard to find silver grade, especially in this condition!