a Bulova chronograph was carried on board Apollo 15, the fourth mission to land men on the Moon, by mission commander David Scott. All twelve men who walked on the Moon wore standard Omega Speedmaster watches that had been officially issued by NASA. Those watches are deemed to be government property. Transcripts from the Apollo 15 Lunar Surface Journal attest to the fact that during Scott's second excursion on the Moon's surface, the crystal on his Omega watch had popped off. So, during his third lunar walk, he used his backup Bulova watch. The Bulova Chronograph Model #88510/01 is the only privately owned watch to have been worn on the lunar surface. There are images of Scott wearing the watch, when he saluted the American flag on the Moon, with the Hadley Delta expanse in the background. The watch shows "significant wear from exposure while on the Moon, and from splashdown and recovery." In 2015, the watch sold for $1.625 million at RR Auction in Boston, which makes it the one of the most expensive astronaut-owned artifacts ever sold at auction and the one of the most expensive watches sold at auction. The watch is also a unique timepiece as it seems to have been a prototype, only revealed by Scott to Bulova's fans in 2014. Therefore, the company released an homage edition of the lunar watch in early 2016, using a modern high frequency quartz movement for the watch that took more than 40 years to make its way into production line. Computron During the quartz crisis, Bulova followed the lead of other watchmakers creating electronic quartz watches by introducing the Computron watch in 1976. The Computron was Bulova's first watch with a LED display and first digital watch. It featured a distinctive trapezoidal steel case profile, with the display located on the side of the case rather than the main face. It was marketed as a beneficial design for drivers so that they could view the watch without needing to roll their wrists or release the steering wheel, but this was mitigated by the need to press a button on the side of the case to wake the display. In later versions, repeatedly pressing the button cycled the display to the seconds, date, day, and a second timezone. The success of the Computron was a significant factor in keeping Bulova financially viable through the next several years. 21st