Deffo not 1993, I've got a (very nearly) identical machine dating to 1953. Giveaway is the oil reservoir RHS and above front main bearing, the circular window and screw above it are an oil needle valve and drip witness window which allow the oil to drip into the front taper bearing. Silly idea, you have to remember to turn the oil off each time you walk away, but it is of its time. It's also got the early Mk1 clutch (the cast iron horseshoe type).
The other tell tale is the knurled screw knobs on the back gear and tumbler gear levers – shortly after this model these became spring loaded but these screw in and out to lock them in position.
I fancy the lead screw half nut lever is off an ML7, but I could be wrong. Mine is machined (straight taper shape) not as cast (handle shaped).
The gear box is worth 1/3rd the asking price if it is in sensible working condition, I'd have thought the price wasn't far off the mark but bear in mind this m/c is 60 years old! I'm not sure which gearbox it is, can't tell from the pictures if is Mk1 (so contemporary with the lathe) or Mk2. Plenty of stuff on here (search metric threading threads) to explain the difference. Green paint isn't original, but if someone loved it enough to re-paint it that's a good sign.
Could be a nice machine if the bed isn't too badly worn. Tell tale marks as of chewing the bed under the chuck and hacksaw cuts tell a story – need more close up pictures to get a flavour of the care (or otherwise) this m/c has encountered on its travels.
Not sure about the stand. Quite apart from the colour mis-match. I believe that the Dewhurst switch was originally mounted on the front of the stand LHS, not mounted through the label as here. Lathes.co.uk piccy's seem to confirm.
If I was selling mine I'd want £1500 or so (no I'm not!!!!) so I don't think this is too far out of order, even sight unseen.