Great find! It certainly looks like a possible match.

(Thanks for the merge Anne.

)
So on Marcus Newhall's Sklo Union CD Rom:
Stolzle Hermanova Hut Glassexport Pre 1958 Catalogue, pattern number
19484 appears very much like our "Cress Set" bowl.
(2 sizes mentioned, 13, 24cm. (remeasured mine at 22.5cm diameter, not sure how accurate the catalogue measurements are).
And Stolzle Hermanova Hut Glassexport Pre 1958 Catalogue, pattern number
19356 appears very much like your amber "Cress Set" underplate.
(8 sizes mentioned, 10.5, 13, 16, 18.5, 21.5, 25.5(?), 28 & 32.5cm)
We must get Pamela to take a look, or any other opinions?