cover 1934-35 envelopes (10, two Official and one registered) and pieces/loose stamps (8) with River Office cancels comprising "DEM: RIVER STEAMER/BRITISH GUIANA" (Type D5; 4, one registered), "ESSEQUEBO STEAMER/BRITISH GUIANA" (Type D11; 4) and "T.P.O. BARTICA STEAMER/B.GUIANA" (Type D5)

Details
cover 1934-35 envelopes (10, two Official and one registered) and pieces/loose stamps (8) with River Office cancels comprising "DEM: RIVER STEAMER/BRITISH GUIANA" (Type D5; 4, one registered), "ESSEQUEBO STEAMER/BRITISH GUIANA" (Type D11; 4) and "T.P.O. BARTICA STEAMER/B.GUIANA" (Type D5)