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The Puma name was begun in the early 20's. About the time when Germans were buying Sheffield steel. I absolutely think the numbering thing was post-WWII.

That's an old one! I think made in Solingen OF Kayser Ellison Steel?

They have the stamp on the backside tang. Some have Kayser Ellison Silver Steel on the front side. Like old Henckels, lots of models.
Mine has nothing on the front tang. A #6.

289884
289886
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As to the '1938' Pumas. IMO, they are post-war from the 50's-70's?
No resemblance to the pre-war one I posted above.

I feel the reputation pre-war was what got the name going after the war. ...

If you can find one, the pre-WWII ones are best..AND much larger.

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