Very nice Swiss made mens vintage wristwatch Vuillemin Regnier Automatic 21 Rubis Incabloc Ebauche Swiss in perfect working condition, case with some low signs of use, nice glass without scratches, movement with mechanical automatic winding is in running condition and goes absolutely exactly (divergence few seconds/24h), does not stop, does not go forward. The movement isn’t photographed because I couldn’t open the back cover. But it’s probably one of the movements from manufacturers ETA, AS, FHF, or FE inside. Both of date windows (day/date) flip correctly. Very nice vintage watch! The case without the crown is 36,5 x 42mm, basic strap 18mm is free. Important notice: The watch is described faithfully and exactly as it was observed during the auction display, and no important information is concealed. However, please note that this is a very old watch with no service history, so I do not provide a guarantee for the accuracy of the time or functionality. The watch is listed in the antiques section and serves as an investment item to preserve the value of money and to appreciate the investment in the future over time; it is intended for collector's purposes. Before starting to wear it, I always recommend checking it with a watchmaker and performing regular service, which is recommended every 3 years for all mechanical watches worldwide.