RARE VINTAGE JAZ DERBY SWISSONIC JUMP HOUR WATCH

Very unusual 1970s jump hour wristwatch. The Jaz Derby uses the esa 9176 movement which is quartz but uses a oscillating balance like a ...

Very unusual 1970s jump hour wristwatch.
The Jaz Derby uses the esa 9176 movement which is quartz but uses a oscillating balance like a mechanical watch.
Nice large case 40mm across.
Very nice condition and running well

PRICETAG: $1800.00