UNIT MARK OF ITALIAN TROOP CONTINGENT IN UPPER SILESIA, 1 Mark red-carmine Steelworks and Dove of Peace 1920 on coloured picture postcard, double-circle RATIBOR 3 12 21 * * a, rare cancellation, violet double-circle unit mark 2 o BATTAGLIONE 2 o REGGIMENTO GRANATIERI DI SARDEGNA (= 2nd Battalion, 2nd Sardinian Grenadier Regiment), unlisted in OS handbook, good condition