Here's something I started last week. This is just the beginning. There are lots more variations to do, but it definitely has potential. Updating a style from 125 years ago. Monoline from Thin to Medium and contrast from Thin to Medium. The original designs were very illustrative but I thought I could make it sharper and with a slight flair. My sketch had a very contrasty style, as seen in pencil, but while digitising I really liked the Thin monoline, so I have done it in both monoline and contrasty styles as shown below. The Thin remains the same for both styles.
I looked for other digitised versions of the Ver Sacrum style but wasn't enamoured with any of them, so I thought there is room for improvement, especially with the versatility of OpenType.
I would make R and K legs thick in the contrasted style.
Although it may be on purpose, there is the contradiction with the construction of the crossbars that they are all at the same height
This example shows all sets together:
Up and Down
Long stretched S
This has all except Alternate E and W:
This is as above without Curvy bottoms, (E andL):
This is just Up and Down with no others:
So there are quite a few possibilities for different styles, some which I haven't thought of yet.
There will be the contrasted style and monoline styles in the same font:
Before anyone mentions it, no it isn't fully kerned.
Ooooh... and here I thought it said «Sacred Worm». But that would be Vermis Sacer.
Back to the drawing board.
Obviously, as the ONB has a complete collection of all newspapers, journals and books published in Austria or the Austro-Hungarian Empire. Oldest newspaper is from 1568.
The Museum of Applied Arts https://mak.at/en has a large collection of Art-Nouveau posters, but unfortunately without open access.