funny, I always thought 'Esher' was in Surrey
I did once collect the Handkerchief vases, but don't remember ever finding a Psychedelic example - although black can be seen as a bit depressing I guess, and orange as more cheerful. Perhaps it might help if you had some of the mushrooms whilst viewing
Must admit I really can't see any purpose to the Diseased Milk Bottle design, and to me it does seem to lack anything that might appeal to the artistic senses - but guess art is all things to all men/wimmin - look how some people rave over Tracy's unmade bed or Jackson's dribbles.
Escher was in a different league to these Handkerchiefs - his stuff really was stunning.
Anyway, good piece of retro Adam, especially if not expensive - and cheerful colours.