Posted 7 years ago
A note before we get started - the German word "Ausführung" in this context means 'model' or 'method of execution'... you get the drift...
According to Loetz Bohemian Glass 1880-1940 (Cantz), many of the variations of painted flowers in black or color stem from the father/son team of Franz and Otto Wilms. After 1914, their painting reflects the influence of Dagobert Peche's designs. Page 262, plate 221 shows a pedestal bowl in the same type of decoration as the vase posted here. It defines Ausführung 170 as "white opal with flowers".
The earlier publication - Lötz Böhmisches Glas 1880-1940, Band I (Werkmonographie), page 350, shows an example of Ausführung 170 on PN III-811, ca. 1916 - a Hans Bolek designed covered bowl, in white opal/black with painted flowers "in the style of Dagobert Peche" (see paragraph 1 above).
Das Böhmische Glas 1700-1950, Band IV, Jugendstil in Böhmen (The Passau Museum Collection), plate IV.213, shows a vase in this shape (III-694) with the flowers in colors of red, black, and green. By definition, all of these examples are Ausführung 170 (White opal/black ground with painted flowers).
The paper pattern found in Lötz Böhmisches Glas 1880-1940, Band II (Katalog der Musterschnitte) - see last scan photo above - shows that this shape with applied black "perlen" or glass buttons, becomes Ausführung 162. This piece, in opal white and black, without the buttons, but with the painted flowers, is Ausführung 170.
The literature also seems to explain why the little painted flowers sometimes attributed to Dagobert Peche (who actually did do some designs for Loetz, by the way) can't be found in any of the literature on Peche. It's because they were painted by the Wilms family, having been inspired by Peche.