DERBY SWISSONIC JAZ ESA9176 JUMP HOUR 1975. The Derby Swissonic from the ESA Dynotron family is the most akward jump minute! It was introduced somewhere in 1975 by Derby SA (an ESA subsidiary) and featured an ingenious (plastic) speedometer drum-machine powered by a 7-jewel transistorized electromagnetic module. Has new battery and recently serviced. Has some light scuff/wear marks (see photos). The item “VINTAGE JAZ DERBY SWISSONIC JUMP HOUR WATCH, Very Rare & Collectible” is in sale since Friday, June 14, 2019. This item is in the category “Jewellery & Watches\Watches, Parts & Accessories\Wristwatches”. The seller is “millie75″ and is located in Bittern. This item can be shipped worldwide.
- Modified Item: No
- Brand: Unbranded
- Casing: Silver/Stainless Steel