Charlee,
Since this thread came back up I thought I'd add my second Singer 9W-7 to the list.
Serial # W23454, has the 221 / 301 bobbin and fits in the standard Singer cabinet.
Other than the serial number starting with a "W" it's exactly the same machine as the one I listed on the first page of this thread.
Revjjo,
Sorry to hear about the damage to your machine. I can't help with the slide plate but you might try Thayer Rags Parts: {
http://thayerrags.com/ }.
Also if you haven't already done so, file a damage report with the moving company. You need to check everything they moved for damage and missing parts and be ready for evasion, lying, and personal attacks. In my opinion if that slide plate is missing it's because one of the movers stole it. There's no other logical explanation in my opinion.
Joe