กำลังแสดง ออสเตรีย - แสตมป์ไปรษณียากรที่ครบกำหนด (1894 - 1989) - 4 แสตมป์.
1917
Not Issued Stamps Overprinted "PORTO" and Surcharged - Emperor Franz Joseph
เมษายน WM: ว่าง การปรุรู: 12½
![[Not Issued Stamps Overprinted "PORTO" and Surcharged - Emperor Franz Joseph, ประเภท I]](https://www.stampworld.com/media/catalogue/Austria/Postage-due-stamps/I-s.jpg)
![[Not Issued Stamps Overprinted "PORTO" and Surcharged - Emperor Franz Joseph, ประเภท I1]](https://www.stampworld.com/media/catalogue/Austria/Postage-due-stamps/I1-s.jpg)
![[Not Issued Stamps Overprinted "PORTO" and Surcharged - Emperor Franz Joseph, ประเภท I2]](https://www.stampworld.com/media/catalogue/Austria/Postage-due-stamps/I2-s.jpg)
![[Not Issued Stamps Overprinted "PORTO" and Surcharged - Emperor Franz Joseph, ประเภท I3]](https://www.stampworld.com/media/catalogue/Austria/Postage-due-stamps/I3-s.jpg)
