Vintage Montgomery Ward & Co. Wall Clock

I have for sale a vintage Montgomery Ward & Company Wall Clock. It is approx. 18 inches tall, 12 inches wide and 5 inches deep. It weighs about 10 pounds.
The movement says "Made in Germany". I'm not sure how old this clock is as it was in my Wife's Grandmother's basement in Pennsylvania when we cleaned the house out last year.
It has 3 holes in the front to insert the key to wind, however the clock does not currently run. I do have the key though. I was told it has a broken spring and was likely from the late 40's, early 50's, however I'm not sure myself. I would welcome any clarification or information anyone may have for this clock.
Please look closely as any sale is final. I can email more detailed photos upon request.
Thanks for looking.