On October 24, 2017 Heritage Auctions will offer extraordinarily rare and exciting pieces to the block. Leading the way, and forming the pinnacle of this single owner collection from a well-known tech entrepreneur is a pair of minute repeaters from Patek Philippe. The Ref. 3974J is both a design and technical tour de force, a masterpiece of haute horology, and rightly considered one of the most beautiful and important wristwatches from the manufacturer over the last 50 years. This example is one of only circa 90 made, in yellow gold, during its 13-year production run and was created to celebrate the 150th anniversary of Patek Philippe.