Capital effort either by Tyler or his daughter for these images of the marks:

C.F. Triebel Suhl


H.S. initials - probably a H. Schilling
More than likely a surplus set of tubes by Gebhard Helmuthäuser from the Carl Gottlieb Haenel facility.


I'd say this G.S. mechanic was the same sourced by O. Geyger, I'd say Gottlieb Schilling

Kind Regards,

Raimey
rse