Massey Harris Directors Chair

This is a 1940-50's directors chair made by the Gold Medal Folding Furniture co of Racine Wisc. with Massey-Harris advertising on it.
I used this behind the counter when I owed a toy store from 1996 to 2006.
If anyone knows the year these were made that would be great. In 1958 Massey Harris became Massey Ferguson so I'm sure it was before that.

Thanks