I've not verified the date - this is what the seller said.
Here she is. This machine is quite small.
We removed the belt guard and bobbin winder, and took the cover off the base for transport - I can sort of make out the paint lines on the belt guard - I'm going to try to map them out for the whole machine.
The numbers - here you can see that the MOP is chips, this was made before the process to "cut" shapes was developed.
And the slide plate - this machine came with two shuttles and two bobbins