Lot
1844 
Italian Offices in Peking, Postage Due, 1917, 10c buff & magenta, double overprint, plus 1917, 10c-40c postage dues complete, o.g., all bright and fresh, a Fine set; with 1952 A. Diena and 2016 Bottacchi certificates for double overprint. Scott No. J1a, J1-J4. Sassone No. 1a, 1-4 €650 ($690).