Ollech & Wajs "Astro-Chron" Yachting Chronograph

Ollech & Wajs, Zurich, Yachting chronograph,  Ref. 2003. circa 1967. waterproof stainless steel wristwatch with three counters chronograph.  Case: Three-body, brushed and polished, revolving bakelite bezel, screwdown case back.  Dial: Black, luminous baton indexes, sunk subsidiary dials for constant seconds, 30-minute counter divided in 5 minute indications for yachting  and 12 hour counter, inner 1/5th second scale, outermost tachometer scale. Luminous baton hands.  Caliber:  Landeron 248, rhodium plated, 17 jewels, straight line lever escapement, mono-metallic balance, self-compensating flat balance spring, shock absorber. Diameter: 39mm Thickness: 16mm Condition: dial and case are immaculate and show very little sign of wear. The bakelite bezel shows some light aging but has no cracks. case back is perfect. Watch is unpolished and original rice bracelet was not sized. Movement is very clean and keeps time with Vintage specs +/- 20sec per day. Overall this watch appears to be in