A textbook piece! Here we have a die struck, zinc gold guilted Kriegsmarine U-Boat Badge by Rudlof Souval, (variation 1). The obverse depicts a u-boat that is surrounded by a laurel leaf wreath and is all below a Kriegsmarine eagle, with outstretched wings holding a swastika in its talons. The reverse reads "R.S.". It has the correct tombac round wire catch on a round plate. The hinge is mounted on a raised rectangular plate. The tombac round wire pin is straight and true. There is no gilt to the obverse with some left to one edge of the reverse and the hardware. See Vol. 1 pg. 114 of Weber & Skora's "The Kriegsmarine Awards" book.
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