U Boat Crewman Style Patch. Stunning Finest Quality Hand Made Bullion Patch. Size 4 inches wide. Track Page Views With. Auctiva’s FREE Counter. The item “German Kriegsmarine Uboat U Boat Sub Wolf Pack Sea Battle Cross Black War Patch” is in sale since Sunday, March 26, 2017. This item is in the category “Collectibles\Militaria\WW II (1939-45)\Reproductions\Germany”. The seller is “shopbags” and is located in San Francisco, California. This item can be shipped to United States, all countries in Europe, Canada, Japan.