Great find Wolfie. The decanter GE75 is part of a suite of glass called "Batt", (I could not find a Swedish translation for that word).
The GE75 seems to be an early Gate design up to 1925 or before.
In the Swedish glass factories production catalogues book there are pictures of the suite in the 1935 Orrefors catalogue, page 99.
Not sure how many years it was in production.
All the best,
Tim