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New laser Kokoshnik of central Moscow assay office.
Letter identification of Russian regions (many towns had their mark in Imperial Russia).
В Kostroma, Yaroslavl,Ivanovskaya
Г Nizhny Novgorod,Tatarstan,Kirovsk,Penza
Я East Siberia (Krasnoyarsk, Irkutsk)
Ю Far East (Khabarovsk,Magadan)
К Don region (Ingushetia,North Osetia,Astrahan,Volgograd,Rostov,Krasnodar, Stavropol)
Ж Baikal
Ф Western (Kaliningrad)
Н West Siberian (Novosibirsk,Omsk)
П Ufa,Orenburg
Б Moscow region (Подмосковље)
З Dagestan
Д Yakutiya
А Northern (Arkhangelsk, Veliky Ustyug)
Л North West (St. Petersburg,Murmansk,Karelia)
С Urals (Yekaterinburg, Perm, Sverdlovsk)
М Central (Moscow)