Frockcoat of Kriegsmarine Korvettenkapitän,I want know who is its owner

[Kraken0629]

[Kohima]

Looks something like ‘Gunther W. Oberleutnant der R??’
(Later promoted).

[Kraken0629]

Thank for your reply，its seems like， it some hard to read the handwriting font for me.But now its difficult to verify through the military registration number.