This is a true miniature Vienna regulator. It’s one of the smallest that I have seen and is a super rare and sought after piece. It appears to be from the first part of the 1900s, but you be the judge. Cosmetically there are no major issues and the clock looks great. Mechanically it’s mostly untested, it was not hung, but it was wound and the spring is good. It also ticks when the pendulum swings. The last service is unknown so it’s being sold as found. This is a truly rare piece and it’s priced to sell so don’t miss it!