Ulysse Nardin, a very well-known luxury brand in the watch collecting world.  However, there are only a handful of attractive vintage pieces made for this particular brand.  This one is a great example of a great looking vintage UN watch.  Gorgeous looking original solid stainless steel case in excellent condition.  The factory original dial is very well patina making this watch unique to its own.  It has been professionally serviced and cleaned.  According to the movement serial number this piece dates to 1955.