Brand: Nivada Grenchen

Model: Datomaster Chronograph ref. 87003 (ULTRA RARE); Swiss Made circa 1960s

Case: Solid stainless steel case with screw-down back is approximately 36mm excluding the original signed Nivada Grenchen "N" crown and original pushers

Strap: 19mm textured tan hand-made calfskin strap (Hermès style) with polished stainless steel tang buckle; also includes what appears to be the original grey leather strap and the original spring bars

Movement: Landeron cal. 187 manual-winding chronograph movement (17 jewels) with date at 12 o'clock; 18,000 BPH; Swiss Made

Features: Stunning original matte grey dial with white sub-registers and unique date window placement at 12 o'clock; original Tritium handset with matching yellow patina; two-register chronograph with traditional 30-minute recording capability and additional orange marking for 45 minutes; 5-minute yachting regatta countdown (orange scale); incredibly rare and desirable model

Condition: Fantastic original condition overall and one of the best examples in existence; solid stainless steel case is thick and sharp with only minor wear and appears to be completely unpolished; original brushed finish on the caseback with crisp engravings and a few minor toolmarks; stunning original matte grey dial with vibrant orange accents; original yellow Tritium lume plots are all present and in tact; original Tritium handset with matching yellow patina; original orange chronograph sweeping-seconds hand is lightly faded

Other: This is a rare chance to own one of the very best examples of the elusive Nivada Grenchen Datomaster. It's no secret that the Datomaster has a cult following of its own among vintage collectors, but very few of these exist and they are nearly impossible to track down. Fortunately for you, we've gone ahead and done all of the hard work for you. You can read more about the Datomaster in Michael Stockton's in-depth article for FratelloWatches. Louis Westphalen of HODINKEE also featured one for sale on Bring A Loupe on May 19, 2017. Hint: These almost NEVER come up for sale. As Louis points out, "it is the date placement at 12 o'clock that makes the watch stand out, much like the Heuer Dato ref. 3147" (first execution). Both watches are powered by a rare Landeron caliber. What's not to love about this watch? And with the prices of other rare vintage chronographs skyrocketing, you may never get another opportunity to own one of these beauties.