The mechanism is in very good condition, it keeps time well, and there are no problems with the calendar. Improvements have been made to the appearance for the first day.The back cover has been replaced, but it has some scratches.It was polished to give it a better look.43 mm without crown.Not covered under warranty.A small scratch occurred when I opened the cover to take a picture of the mechanism.I am sending it by registered mail.PTT post.