Confident it is 50+ years old but is in super cosmetic condition. Some very minor bubbling on the paintwork which I've tried to capture in the 2nd pic & two small chips at the bottom end. Takes the screw in valves and the threads look perfect. It also has the hole in the top to store the valve.
It does blow air out but I haven't got a valve to test properly but I have unscrewed the barrel & the foot/plunger is in reasonable condition the inside of the barrel looks a bit greasy so could probably do with a proper clean out.
£12.50 including insured postage within the UK. (it will be bubble wrapped and a box made to fit so it arrives as it left me)