![Stamp: Postage Due (Austria(Jubilee with overprint "PORTO") Mi:AT P59,Sn:AT J48,Yt:AT T48,Sg:AT D285,AFA:AT P59,ANK:AT P59,Un:AT S48 Stamp: Postage Due (Austria(Jubilee with overprint "PORTO") Mi:AT P59,Sn:AT J48,Yt:AT T48,Sg:AT D285,AFA:AT P59,ANK:AT P59,Un:AT S48](https://i.colnect.net/f/8507/578/Postage-Due.jpg)
Stamp: Postage Due (Austria(Jubilee with overprint "PORTO") Mi:AT P59,Sn:AT J48,Yt:AT T48,Sg:AT D285,AFA:AT P59,ANK:AT P59,Un:AT S48
![1945 postage stamp set Mi.175-188 PORTO** from Austria [Österreich] - Philatelic Shop Morawino Stamps 1945 postage stamp set Mi.175-188 PORTO** from Austria [Österreich] - Philatelic Shop Morawino Stamps](http://morawino-stamps.com/sklep/16152-thickbox/austria-osterreich-175-188-porto.jpg)
1945 postage stamp set Mi.175-188 PORTO** from Austria [Österreich] - Philatelic Shop Morawino Stamps
![SUMMER: Non-stop from Vienna, Austria to Porto, Portugal for only €20 roundtrip (& vice versa for €20) (Aug dates) SUMMER: Non-stop from Vienna, Austria to Porto, Portugal for only €20 roundtrip (& vice versa for €20) (Aug dates)](https://www.secretflying.com/wp-content/uploads/2017/03/porto-1.jpg)
SUMMER: Non-stop from Vienna, Austria to Porto, Portugal for only €20 roundtrip (& vice versa for €20) (Aug dates)
![File:Austrian KK 1 heller Porto Stamp Portrait of Emperor Charles VI Nachmarke.jpg - Wikimedia Commons File:Austrian KK 1 heller Porto Stamp Portrait of Emperor Charles VI Nachmarke.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/d/dc/Austrian_KK_1_heller_Porto_Stamp_Portrait_of_Emperor_Charles_VI_Nachmarke.jpg)