Bidspirit auction | Three German World War II

Three German World War II era pins - Three German World War II era pins, includes a large, about 1 3/4 inch across piece that looks to have a sterling silver inlay, it is a screw back and I believe it is for an auto racing sports club, it has the same border as the brass clip depicting two rifles crossed as seen, it has a Hallmark on the back it is a family crest of some sort, also included is a 2 1/2 inch German U-boat pin, it looks to have been repaired at some point, pin reattached, there are no markings on it.