Leningrad's unknown probe is the initials of GHS 1736-1737.

Features
- Alphabet
- ГЩ
- Years
- 1736–1737
- Shape
- Direction
Description
The brand of an unknown propulsion master with a picture of the master's initials, there's a year 1,736 in the top, and the initials are marked in two letters "GHS." (1736-1737) Form:
Similar hallmarks

ККClaymo of an unknown probe of Camernet-Podolska, initials of CC, 1758-1764.

Д-ЗClaymo Probe Master of the Costrom - Dmitri Ivan launches - D-Z initials - 1787-1824.

В-НVladimir's probe, Nechay Vassilia Herasimov, initials V-H, 1778-1794.

1778 I-CKleimo, unknown test master Kiev, I-C initials 1778

1763 А-СClaymo Archangelska - Sokolov Alexander - initials A-C - 1755-1771

М-К 1826The stigma of the test master of Leningrad - Karpinsky Mikhail Mikhailovich - initials "M -K" - 1825-1838.
