Originally Posted by Mikee
Maybe, Heinrich Petersen (31 March 1904 – 9 May 1945) was a Standartenführer (Colonel) in the Waffen-SS. Place of birth Sonderburg, German Empire (modern Denmark)
Place of death between Tábor & Pilsen, Bohemia

Hi Mikee, the ring is not Heinrich Petersen's, he had his ring since at least 1936. Petersen is a common name, and there were many SS officers with that name unfortunately. One possible owner of your ring is Dr. Peter Petersen, SS Untersturmfuhrer // SS Nr. 117843 // DOB: 6.4.1900

He is the only officer in 1938 DAL named Petersen who does not have the Totenkopfring, though it is unknown if he received it later. However, I believe it will be near impossible to find your original owner without more information. How did you discover the ring? Where does it come from?