I've said it before that I quite like postal stationery as complementary items to any definitive collection, but sometimes they're even more interesting than usual. Take this one for example.
It's a special jubilee card for the 60th anniversary of the accession of Emperor Franz Joseph of Austria, issued in 1908. Now most post cards and other stationery just depict the sheet stamp which prepays that particular rate, but on this one, some more attention was paid to the whole concept. Let's have a closer look at the imprinted stamp image.
And now let's have a look at the ordinary 5 heller sheet stamp.
Exactly. You see, the front of the card already showed a contemporary portrait of the Emperor, so for the stamp image they chose a portrait of the Emperor at the time of his accession in 1848. This actually is the image that was used for the 30 heller sheet stamp.