There were only a few bases made by rover, Pics will definitely help. If its side discharge it will be either high or low arch, 21 or 19" cut. The low arch hit the market around 1965, and was replaced around the early 70's by the high arch (sold together for a couple years). both were optionally self propelled.
If it is only the base without any cracks or damage it would be perfect for a restoration if you had one complete with a broken base. Otherwise as far as rebuilding it would go I would not say it would be worth it, There just isn't the following or call for the rovers to make it viable
