Self Winding Watch action Bulova Benrus Greun 1961 pictorial Felsa Bidynator

"How a Self Winding Watch Works" A look back at the Felsa action, made in Switzerland and used in some Bulova, Benrus, and Greun wristwatches.  Details and graphics on how it keeps almost perfect time.
  This is an original 2 page magazine article from 1961.
We do not photocopy these.

Payment: by Paypal, Visa, Mastercard, Discover, American Express, Apple Pay, G Pay, accepted thru eBay. Items shipped upon receipt of payment.  

• Multiple Items may be grouped to save on shipping. When buying more than one item please use the shopping cart for the best shipping price.

 

• Rates:
  • $4.00 for USPS first class / or media mail service
  • $8.70 for priority mail service.
  • $4.00 for Canadian shipping
  • $6.00 other International shipping. For Tracked International service you must use ebay International shipping - price varies.

Grandpa's Secrets Discover a Wealth of How-to Projects & Plans from a Bygone Era. Explore our Scientific & Mechanical History in Vintage Hobby, Craft, & Technical Magazine Articles.