Claymo Master Schper Adolph - Leningrad - A-SPER initials
Similar hallmarks
UNGERKlemo Master Unger Herman Gotlib - Leningrad - initials of UNGER
G.F.STThe stigma of the master Stang Gotgard Ferdinand - Leningrad - initials "G.F.ST"
M.ZYBERTClaymo Master Cybert M. Harkov - initials of M.ZYBERT - after 1908.
ГУБКИНЪClaymo Master Hubkin Ivan Semenovich - Moscow - initials of "GOBKINA"
ГРАЧЕВЪClaymo Master Grachev Gavriel Petrovich - Leningrad - initials of GRACHIV - 1866-1873.
TAPPERClaymo Master Tapper Henry - Leningrad - TAPPER initials