1872 ENVELOPE USED LOCALLY IN EDINBURGH WITH 1D PL. 124 (SG43) EDINBURGH DUPLEX' NOT CANCELLING STAMP. Envelope used locally in Edinburgh with 1d pl.124 (SG43) lettered PI, stamp placed at upper left tied 'EDINBURGH/131' duplex NO 8 72 with additional strike at upper right where stamp would normally be. Envelope with imperfections but unusual usage. (Ref 36636).