By now I got wiser on that "L" or "Z", resembling the symbol for the British pound sterling: This mark was used by the Gebrüder Kelber barrelmaking company, founded by Louis Kelber in 1894, owned then by Louis, Robert and Wilhelm Kelber. They used either this L stamp or a LK. In 1927 the "Gebr. Kelber" company was dissolved, but as noted above both Louis and Wilhelm Kelber started again on their own, Louis using the "LK" stamp and Wilhelm the well-known "WK". Who, one or both?, for which orders?, continued to use the "GB pound" stamp? Wilhelm at least is known as a rifling specialist, while Louis also made barrel ribs as a side business.
Axel:
Any idea who the other 2 tube makers were and also have you any info that a Schüler(Richard/Robert/???) either owned or managed one of the Kelber's shops? Could the "GB Pound" sterling stamp be a combination of S & L?
Kind Regards,
Raimey
rse
