London preliminary proof on the pattern welded tubes and it appears the tubeset is pre-1893 and I'd guess from the mid to late 1880s. I'll have to look but the intertwined TS above a stag just forward of the flats may be that of Thieme & Schlegelmilch, in that Hubertus type depiction. Several integers in the number on the flats.

Carl Gründig was a firearms merchant.

Kind Regards,

Raimey
rse