Old Snap On Rachet

[cgall66]

I came across an old 1/4" snap on rachet with the following markings under the snap on logo:
6m-70-m-usa.No other markings on the rachet do you have an idea about the year it may be?

[wrenchr]

Picture's help ;)

[snapmom]

Its a GM-70-M probably from the late 40s.