I was searching through craigslist and found this oak C-250. http://jxn.craigslist.org/atq/5036679440.html The cabinet looks to be in very nice shape despite all the dust, it also appears to have the Duncan stop. The only major problem I van de is that it's missing the reproducer but it sounds like you could probably get the machine for CHEAP since he's looking to get rid of it quickly.
-Tom