Er, yes. Sadly, these hardly ever show up at autojumbles and when they do, they are at Aston Martin prices.
Like MRF says, you'll go weak at the knees at the price of new ones!
However, a determined bodger could buy the chrome trim and lenses parts (which is the bit you can see), and fabricate the backplate and bulb holders (which you can't see when it's assembled).
these guys used to actually cast the chrome frames and I bought a pair back in the early 90's. Looks like they have been either bought out or revitalized by youth as when I went to collect it
was a scruffy little place with their collective arses hanging out of the their jeans!
http://www.ashwater-classics.co.uk/
don't be surprised if they wont sell to the public