Vintage LACO National Precision Marked 17 Jewels Waterproof Watch Runs

Appears to be a good running watch.   Oddly the face says 17 jewels but the works indicate 15 jewels.  It also looks like a prior owner sometime in history may have engraved his name on it as shown.   Video shows the watch running.   Because of bouncing around in shipping and not knowing the service history of watches I am no longer guaranteeing them.   You see what I saw and observed over several hours but this watch has not been checked for accuracy or duration of run time.  Bands are disposable items,  they wear out,  this band has clearly been worn.