Lot
405 
Italian Offices in Tientsin, Postage Due, 1918, 8¢ on 20c buff & magenta, "8 CENTS" double, top left stamp in a block of 4 with normal, o.g., never hinged, fresh with rich colors, Fine, a wonderful example of this very rare double overprint variety, especially so in never hinged condition; signed A. Diena and Fiecchi, with 2016 Bottacchi certificate. Sassone No. 6a, 6. Scott No. J6a, J6 $5,920.