806, Valjoux 72 ‘AOPA’ Navitimer, Steel Chronometre Bleu it is an uber-Lange from

it is an uber-Lange from the early years of the manufacture

Cartier's most recent release of the classic 1912 shape

4100SA Royal Oak

collector Auro Montanari

806, Valjoux 72 ‘AOPA’ Navitimer, Steel Chronometre Bleu it is an uber-Lange fromA very early ref. 806 Navitimer with a Valjoux 72. Only the first few months of Navitimer production were Valjoux 72 based, Breitling switched very quickly to a Venus calibre for reasons still unknown. Based on case serial numbers, it is widely estimated that fewer than 1200 examples were made over those few months. All feature this deep gloss gilt radium AOPA dial, a different bezel with a greater number of machined beads, and a wider, more prominent