I do like a 1930s glass lampshade, and in the past few months I've collected three of them in my charity shop round.
Firstly this one - which I actually paid TEN POUNDS for in the Broomhill Oxfam
Then a couple of weeks ago, the St Lukes Vintage shop - again in Broomhill - yielded this beauty for just £1.99
Then from the collection I have this in my study
Waiting in the attic are two more