Great set of 3 Ringe tubes that wear a Sauer Quality Stamp & it would be sacrilege to alter them. As Ford said >>FA<< notes effort by a Suhl mechanic & I would say Adamy as I have seen many sets of >>FA<< initials on the flats but not on the wood as I recall. With the >>Nitro<< low on the flats it will date to towards the end of WWI up to 1923.

Serbus,

Raimey
rse