Up until 10-15 years ago you probably could pick up an Oyster Perpetual Rolex for maybe $1000. Look for a Rolex 1002- that's one model. Also, a Rolex Air King 5500 is another but it doesn't have the SCOC movement. These watches weren't typically repped because there wasn't much demand for them. Silix Prime has some vintage watches like this Air King
Other ROL014 watch, Cheap Other ROL014 watch online for sale (silix-prime.es)
But alas Silix isn't a TD here. However I've never had a problem buying from them .
Another way to go would be to buy a gen case and dial and put together your own watch.