1898 MINING ENVELOPE. 1898 registered postal stationery envelope London to Basel Switzerland with ½d vermilion and 4d vermilion embossed cancelled REGISTERED/GRACECHURCH ST NO 1 98 with fine imprint in blue at upper left "GELDENHUIS ESTATE and GOLD MINING COMPANY LIMITED 120 BISHOPSGATE STREET WITHIN LONDON E.C.". (Ref 83818).