Baldor 712 Grinder Year ID

[atvkid4eva]

I picked up what I believe is a Vintage Baldor 712 Grinder. I came mounted on a very Heavy duty cast Baldor Stand. I am restoring it and was wondering if anyone could give me any info on what year it might be. I’ve attached a pic of the serial tag. Let me know your thoughts.

 

[319]

I have a 712, appears identical to yours, at least from the viewable image, however the data plates or labels were gone when I acquired it in 1976 and it was probably 10-20 years old then.
These are well built, fantastic grinders!

 

[atvkid4eva]

Also, if you zoom into the label along the side it says “G7 41”. Anyone know if this has any relation to the manufacture date? See pic below.