1873, 2¢ brown + 10¢ brown, pair. Canceled by "Cambridge, Mas., Dec 11" cds and cork duplexes on cover to Callao, Peru, red "New York, 12, Dec 23" exchange cds and manuscript "Ship Agenor" endorsement; cover slightly reduced at right, Very Fine. Scott No. 157+161  Estimate $150 - 200. $0 (Image)