Muri Bhalissa: Austrija - Bolol tal-pustaġġ-dovut (1910 - 1919) - 4 bolol.
1917
Not Issued Stamps Overprinted "PORTO" and Surcharged - Emperor Franz Joseph
April WM: Xejn Perforazzjoni: 12½
![[Not Issued Stamps Overprinted "PORTO" and Surcharged - Emperor Franz Joseph, Tip I]](https://www.stampworld.com/media/catalogue/Austria/Postage-due-stamps/I-s.jpg)
![[Not Issued Stamps Overprinted "PORTO" and Surcharged - Emperor Franz Joseph, Tip I1]](https://www.stampworld.com/media/catalogue/Austria/Postage-due-stamps/I1-s.jpg)
![[Not Issued Stamps Overprinted "PORTO" and Surcharged - Emperor Franz Joseph, Tip I2]](https://www.stampworld.com/media/catalogue/Austria/Postage-due-stamps/I2-s.jpg)
![[Not Issued Stamps Overprinted "PORTO" and Surcharged - Emperor Franz Joseph, Tip I3]](https://www.stampworld.com/media/catalogue/Austria/Postage-due-stamps/I3-s.jpg)
