Loetz 'Blumenschliff 333' Cut Glass Vase

I was recently lucky to find this lovely example of Loetz's cut glass, in their 'Blumenschliff 333' pattern on 'dunkelblau' (dark blue) over crystal. It dates to 1927, and is a series three shape, PN III-510. This vase has the same flower pattern as Ausf 276, but is not flashed clear crystal, and it doesn't have the additional cutting around the rim. If you have not read it yet, Dr. Kai Hasselbach has a fascinating article about Loetz's cut glass production on Loetz.com at https://www.loetz.com/featured-articles/a-study-of-loetz-cut-glass-production.