Universal Geneve "Ten" production estimate & rarity table 

The tables below are updated in real time, as and when new information comes to light and includes many of the vintage Heuer grails and most collected models. The production estimates are based upon extensive serial number research from my own large database, and would equate to the maximum possible amount produced. Naturally not all serial numbers would have been sold, as 5-10% of cases would have been kept back for service centres and so "fewer than" is the terminology used to describe the numbers in this column. Numbers known equates to individual examples I have noted on my database from auctions, dealers and collectors. Bands (ie 20-30) are used because this is something of a moving target. Swipe up/down left/right on the tables below to inspect