Observatory confusion, and number of models
By: gerald.d : January 19th, 2018-22:48
Great review of a wonderful watch! Just wanted to pick up on a couple of points. "6185 (A and B, VFA and Observatory Chronometers, date)" " Cal. 4520 (no date), 4522 (date) and 4580 (VFA, Obervatory Chronometers)" " or one of the just over 120 Observatory...