The "Ardatov type" stamp is the philatelic name for the fifth design type used by the EZGB for the issuance of Zemstvo postage stamps from 1902 onward. According to published sources, the name was derived from Ardatov Uyezd, whose stamps were the first to be printed using this type.
January 1, 1871 — the Kadnikov Zemstvo Post was opened.
From 1903, all subsequent issues of Zemstvo postage stamps were produced in St. Petersburg at the Expedition for the Preparation of State Papers.