Judging by Nigel's comments, to me in your link .... "a number of other manufacturers made these, including from the Continent" - then there does seem to be a difficulty with a positive attribution, unless a match can be made with a Nazeing catalogue item.
Looking at the 1930s Nazeing designs, from their catalogue of that decade ............ ref. Nos. H1 to H7, this one doesn't appear to be a match for any of those, although one of the factory colours was something called 'Natural Mulberry, which is possibly what your colour is........at least that's what I remember the colour of Mulberry fruit to look like. According to Geoffrey Timberlake's book, the post war availability of colours for Nazeing's lanterns did NOT include Mulberry - the only colours offered were crystal, peach and golden amber.
Apparently in the second period, shapes were changed but the names of the designs, in many cases, remained the same.
My opinion is that this could be anywhere from mid 1930s to late 1950s, but is probably not a Nazeing design - BUT, as you can see from my toing and froing in 2012, it's not always that cut and dried.