Hi Alan.
You won't find a year-of-manufacture on one of those but you can differentiate between early and late models by the way the headstock is made. Of the early ones the spindle ran in bronze mounts whereas later ones ran the spindle directly in the cast iron headstock. An explaination can be found here:
http://www.lathes.co.uk/drummond/page2.htmlI had one of these for a while which I sold a few months ago, it had a 4-jaw chuck, faceplate and boring head, a fairly good selection of changewheels and an indexing attachment. They are cranky and awkward to use compared to anything even remotely modern but satisfying enough if you're in no hurry, and they have the benefit of being nicely solid and compact so work well in a tight space.
Pete.