Hand painted blue glassware tumblers x 6

I know very little about these - what I presume are hand painted tumblers -(I can't make out the signature) other than I bought them from a junk/antique shop about 18 years ago for I think about £40. I don't mind if they aren't worth anything I'd actually like to buy more if possible but not being able to make out the signature I'm unable to do that, so any help would be greatly appreciated.
Thanks.