1941 Elva, 1 rouble Chapayev, used (faults)
Genuine, signed by Eichenthal. Thin paper — I’m not expert on Russian stamps but this looks thinner than other stamps of the era. Looking at smeared violet Eichenthal marks it may be that back of the stamp was made wet and rubbed on some reason (has had thin spots?), making the paper to become thinner. Priced accordingly.