Slovenia – Austria joint issue year 2013 Cave Postojna postage stamps MNH
That is a historically significant joint issue, marking the unique connection between the two countries!
The Slovenia-Austria joint issue of 2013 did indeed feature Postojna Cave and specifically commemorated the world’s first underground post office which operated there.
🇦🇹🇸🇮 Key Details of the Joint Issue (2013)
| Feature | Detail |
| Full Title | Postojna Cave – Underground Post Office |
| Slovenian Issue Date | March 22, 2013 |
| Austrian Issue Date | April 6, 2013 (Released two weeks later) |
| Topic | Postojna Cave and the 800th Anniversary of the First Recorded Visit to the cave. |
| Format | Two separate Miniature Sheets (Souvenir Sheets), one issued by each Post. |
| Slovenian Stamp Value | €0.64 (Issued as a stamp within a souvenir sheet) |
| Motif | The stamp, designed by Matjaž Učakar, featured a historical photograph of the original Underground Post Office inside the cave’s Dance Hall, which was opened on August 15, 1899, when the region was part of the Austro-Hungarian Empire. |
| FDC Postmark | The First Day of Issue Postmark was from 6230 Postojna. |
🕰️ Historical Significance
The joint issue highlighted a shared historical element:
- The establishment of the post office in 1899 was an Austro-Hungarian initiative to serve the massive influx of tourists visiting the cave, confirming Postojna Cave’s status as a major international tourist destination even then.
- The stamps focused on the first underground post office, which used the postmark “ADELSBERGER GROTTE – POSTOJNSKA JAMA” (Adelsberg Grotto is the German name for Postojna Cave).

Reviews
There are no reviews yet.