Ars Medici - Das Organ des praktischen Arztes (the organ of the medical practitioner)
Herausgeber: Dr Segel, Wien, IX. Spitalgasse 1a.
The journal was first published about 1910/1911 and continued to be published monthly till the 1950s
ars10 - 3h - postmarked 18.01.1911 - size 217mm x 313mm
ars 10 - 5h - postmarked 17.01.1911 - size 226mm x 319mm
ars20 - postmarked 23.01.1911 - size 226mm x 311mm
ars30 - postmark date blurred - size 212mm x 312mm
ars40 - postmarked 27.01.1912 - size 224mm x 309mm
ars60 - postmarked 23.12.1915 - size 216mm x 314mm
ars70 - 5h green - used to Sweden no postmark - size 224mm x 318mm
also exists 3h red lilac
ars80 unused - size 229mm x 317mm
In addition to the ones shown above I also have a cut out as shown below. Since Ars Medici also had envelopes with the same overprints as wrappers it is not possible to tell if this was a newspaper wrapper or an envelope.
So I'm waiting for another one to turn up (I've been waiting since November 2006).
I have been unable to find out any information regarding Ars Medici and would welcome any information about them.