Posted 7 years ago
Here is a very unusual example - readily identifiable as Prod. Nr. III-1119 (20 cm size), ca. 1920, in Dunkelblau (dark blue) overlay with colorless crystal ball feet, but an unusual underlay of yellow glass. The yellow layer is UV reactive, but in an unexpected way - it glows bright orange/red! (see third photo).
There were some firms in Nový Bor (German name: Haida) who commissioned from Loetz that did this type of cut to clear refinement; most notably, Julius Mühlhaus and Carl Schappel*. Schappel was certainly a customer who ordered from the regular Loetz production lines, as well as made-to-order pieces, as late as 1929.**
*source: Glass 1905-1925, Volume I - From Art Nouveau to Art Deco, Waltraud Neuwirth, 1985
**source: Loetz/Series II - Paper Patterns for Glass from 1900 to 1914, by Jitka Lnenicková, 2011