Thank you Chris.
You might be right about the early CNC... Funny that Ex-Cell-O used the same model (or type) number for so many vastly different machines.
It is sitting outside my shop while we rearrange the shop to fit it in the right place.
Here it is:
View attachment 237935
There are quite a lot of empty (but previously used) bolt holes like this around the machine which supports your early CNC idea.
View attachment 237938
Here is the heart of my problem:
View attachment 237936
The unexpectedly missing left Y handle:
View attachment 237937