Signature of Kriegsmarine KC Recipient 'Rudolf Mühlbauer'

In a very good condition a original signature on a postwar portrait picture of Rudolf Mühlbauer. Oberbootsmannmann Rudolf Mühlbauer earned the Knight's Cross of the Iron Cross on December 10, 1944 as Oberbootsmannmaat und Brückenmaat of U-123.The portrait pictures comes with personal postcard.