Auction # 2510 WORLDWIDE + ARGENTINA: Special March auction

19/MAY/1879 Talca - Santa Clara (California, USA), mourning cover franked with 20c. (4x Sc.27), with transit marks of Valparaiso (21/MAY), Panama (15/JUN), New York (24/JUN), due marks applied in USA for 10c. and 17c., and on arrival it received on back postage due stamps for 15c. (Sc.J4 in strip of 3, value in used US$70 each, possibly 2c. are missing) with mute cancel and datestamp of Santa Clara, with opening defects in the bottom border, all the same very interesting!