1917 - Beijing: 2d on 5L ultramarine and pink with
1919/20
1917 - Beijing: 2d on 5L ultramarine and pink with local oveprint of different type "2 dollari Pechino". Rare, Sign. Em.Diena and Cert. A.Diena and Manzoni "ottimo stato" (Sassone 29 - € 35.000)
