Just returned from my hols all suntanned and lovely. My eldest son came down from London and gave me my Christmas present, last years not this one. So I lit it up and made him and his good lady a cuppa. Worked a treat except that the bottom has a pin prick hole but a bit of solder will cure that.
Hi Henry Lovely looking Redcap. They weigh very little and are ideal for making a brew of tea. I think they were popular amongst motorists and cyclists. Yours is a No 1, which is the quarter-pint model. I have a No 3, which is the one pint.
I didn't realise they came in different sizes, here's a half pint version - - the bottom bit (burner holder) is cast aluminium
Looks like many sizes and varieties ! I didn't realize the size until I saw the 123 in the background!