If it was rounder ...... it would look like the one in my '40 ....... which I believe was constructed for 1937 , you have similar door and knob structure , so may be a similar era .

Have you worked your way thru this thread ?

https://www.stovebolt.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=912753&page=all

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