勞力士，罕有，不銹鋼自動上弦腕錶，配中心秒針，型號6298，約1953年製 瑞郎4,000-6,000

Reference 6298, an updated version of the Explorer prototype reference 6098, was launched in the early 1950s, its case comparable to the large size bubble back wristwatches. Early examples featured a white dial and gilt numerals and hands, later models were fitted with the typical Explorer-type black dial with Arabic quarters.