Dobin, Manfred (1993) Postmarks of Russian Empire (Pre adhesive period), St. Petersburg: Standard Kollektion Noël, Gilbert (1956) Catalogue des oblitérations...
DescriptionSt Petersbourg 1856 Dob102307 magnified.jpg English: Russia 'St. PETERSBOURG 1856 III 31' lozenge shape postmark. Catalogue: Dobin 1.02 type...
