1879, "On Postal Service" official cover sent from Bombay to the Post Office of Constantinople, Turkey with boxed "BOMBAY" dispatch on front and b/s transit-cds "OUTW. BOMBAY 12 DEC", "SEA POST OFFICE C DEC:15" and "POSTE EGIZIANE 27 DIC 79 SUEZ", a very unusual destination! (Tax Method: Regular Taxation)