Thanks Justin and all the others folks who offered excellent suggestions and advice. I appreciated all your helpful comments.
I did a thorough vacuum of the living room floor and sofas and found no spring.
Didn't read about your panty hose at that tim. No problem as the wife hasn't used panty hose in decades. She wears shorts or pants only.
I'm taking Raid's advice and sending the Bessa-R to Eddy Smolov for repair. He knows the spring is missing, but I made a better detail of it, so he can count the coils and see how the two gears were oriented. He said it won't be a problem to get (or make) a substitute spring.
Here is the improved detail with Bessa's late spring in sistu.
