1899 (Apr. 18), IPO Cover from Swatow to Philadelphia, bearing ICP 10c dark green, canceled by Swatow Large Dollar Dater, in combination with Hong Kong 10¢ with "I.P.O." framed tie-print (type 1) and "Hong Kong/C" c.d.s. (4.19), no arrival; the cover with some ageing and creasing clear of stamps, Fine appearance.