Hmm, either the car is listed under its original registration number or, if it's an import, the number it's wearing might not yet have been included on the database for the model. It appears not to have existed in the MOT database before the 27th of April, 2015, at which time the stated odometer reading was a mere 27 miles, that test has now expired and being pre-1960, it would have been MOT exempt in 2015, before the current rolling 41st year exemption was adopted, but at that time, being issued with a test certificate would have made UK registration a simpler process if it is indeed an import, so another possibility is that the "age-related" plate came about as a result of the car's having been stashed away in the proverbial barn before the DVLA database was committed to digital storage back in the late '70s-early '80s. Had the last scenario been the one that fits, then, if the plate hadn't been reissued, the original UK registration may even now be available on a non transferable basis.
I totally empathise with Mrs GHT's asthma. Until the last few summers, when pollen has been far more vicious than it used to be, I had had no asthma or hayfever symptoms since childhood yet now, I'm on my fourth Ventolin of the last two years and it's only Spring. Still, wheezing and using the inhaler in shops seems, for some reason

, to assure me of my 78 inch physical distance as required by the 2020 Coronavirus act. Oh well, every cloud eh. Not that we've seen clouds recently, a good thing as my front lawn is now baked and as such, the lawnmower has been taken out of service for some much-needed welding to the deck, a magneto overhaul, a clutch change and an engine rebuild that ought to pacify those who object to a four stroke that makes so much blue smoke, the fussy buggers. If only head gaskets for cars were so easy to cut from a sheet of copper that's been in my hut for years, that saves a fiver for the mower, but would take more like fifty or more pounds worth of my time for even a basic four cylinder water cooled engine as fire rings and all raised edges of that sort would have to be drilled undersize and have their raised edges formed by stretching the holes by hand, and that's easier to say than it is to do in the kitchen, ah the joys of being locked down alone, the bed's bigger than it used to be too!