Gorgeous watch, but decided I want a Blancpain instead, so a catch and release. This is a stainless 40mm case. The moon phase is based on the 134 tooth gear which is accurate to over a hundred years. The usual moon phase has a 59 tooth gear which rounds the lunar cycle of 29.513 days to 29.5 and loses accuracy within months. The movement is a heavily modified ETA 2892-2A, with beautiful decorative work and a see-through rotor. The finish work on this watch is superb, consistent with Perrelet's reputation. Box, papers, etc, all included. TZ 97%.