Rank of Wilhelm Friedrich Boger?

[Wladimir]

In different sources Wilhelm Friedrich Boger (19.12.1906 - 3.4.1977) is mentioned like SS-OBERSCHARFÜHRER or SS-HAUPTSCHARFÜHRER. What is right?

Thanks in advance!

[steve248]

Danuta Czech's 'Kalendarium Auschwitz-Birkenau' only lists him as SS-Oschaf.
Born in Stuttgart.

[Georges JEROME]

Wilhelm Boger
19XII 1906
SS-Oberscharführer
Pg (153652) SS (2779)
on 1933 hilfspolizei then joined political police
1937 kriminalkommissar in Gestapo
1939 Gestapo office in Ciechanow
1942 - end staff Politische Abteilung KL Auschwitz
1945 KL Mittelbau

[Wladimir]

Danke!