JAJ were the makers of Pyrex in the UK in Sunderland from 1922 to the mid 1970s when they were taken over by Corning who added the Pyrex England backstamp.
Funny how I happen across things in themes, I don't go looking generally they seem to find me. This one is from the 1960s and is in very good vintage condition, no lid but they are really easily picked up. Lovely and bright, no scrapes or dishwasher damage. Great MCM design and really useful too.
Dimensions 95mm high 245mm wide