Picked this up last year with a good providence in Walsall off a Dudley chap he was in his middle 50's. Apparently it was his Grandads and always saw it hanging on the wall in his house. What makes me think it is a one off, is the colour red, the capacity a pint and half, and the non uniform shape. I have heard of tales of glass blowers in the Stourbridge area making these and trading them in at the local pub for a few pints. Any info or input would be most appreciated many thanks Mark