The scattergun tubes have a forge mark of what I think to be for the Klett klan of Suhl, although, it could be for the Kelbers. There's 3 initials on the rifled tube and it looks to be "RFM" and for now I would guess the "M" to be for Mehlis unless Ernst Richard Meffert had another initial of "F" such as Ernst Richard F. Meffert. The "mm" stamp would put it post 1910 and the bullet type and mass will put it post 1911 if from ZM and post 1912 if it passed thru the Suhl proofhouse.

Kind Regards,

Raimey
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