I just finished another revival! This is "Maria Theresia Versalschrift", originally designed by Heinz Keune in 1903, and published by Schelter & Giesecke. I only had a partial specimen, so some of the letters, and all the numerals are conjecture. I redrew everything and added the customary extras to support Western/Eastern European languages. There are also a number of funky ligatures and a couple of alternates.
This is the sixth of hopefully twelve Art Nouveau fonts. I expect to finish the whole set by early Summer.