Vintage GMT-Master Instruction Booklet - ref. 16700, 16710, 16713, 16718 Explore the history of the iconic GMT Master with this vintage booklet. Designed for collectors and enthusiasts, it celebrates the timeless appeal and functionality of a watch crafted for world travelers. This is a particularly rare and unique booklet, perfect for those who appreciate the heritage of exceptional timepieces. This guide is for references: 16700, 16710, 16713, 16718 All products on our website are 100% authentic.