I came across this Consew 18 a few weeks ago in my storage area at work. I haven't seen it before as it has no table. (In my defense, I have 300 machines in storage) I brought it into the shop and I'm hoping next week to start going through it. I find the hole in the bed fascinating. I wish I knew the story behind it. I dropped a Singer 211 head 4' off a loading dock and the bed broke in half. Anyway, here's a few pictures, more to follow time permitting.
Regards,Eric