I looked at a number of online sources to no avail and then posted it, with a request for an ID, on the great Everyday and Elegant Glass Forum. It only took a day before the set was identified. What a great network of glass afficionados!
Turns out that this set was made in the 1930s by a glass company called the Inwold Glassworks of Prague, Czechoslovakia. Here is a wee bit of information in its history – http://www.museumportheimka.cz/vystava/inwald-the-story-of-a-glassworks/. The line is called Perforal. No idea of the name of the colour.
I would never have found this ID on my own as it didn’t occur to me that it may be a set from Europe.