R.O.P.I.T. issues: 1866, 10 pa. rose/blue, fresh colour, full to large margins all round, cancelled by oval "Compagnie Russe Kerassunde de Navig. & de Commerce" (Tchilinghirian 107) in black, very rare, signed Mikulski with certificate. Provenance: 'Cihangir' Collection (Corinphila, 2001)