Visor cap inner stamp 'HB' questions.

[laison]

Hello, I saw many HBXX(XX = Years) stamps inside hats. So, can anyone tell me what HB means?

I'd appreciate your reply.

[ErWeSa]

There is almost nothing that has not yet been discussed here, see here (post # 4):

Black SS NCO Schirmmutze by Heinrich Wille

or here (post # 34): ss vt officers tunic

or here(post # 2): 1937 and its markings in caps.

or here (post # 31): SS RZM Tags