IT'S VERY OLD AND DEFINITELY VALUABLE I JUST DON'T REALLY KNOW HOW TO ESTABLISH IT FULLY. I DIDN'T EVEN KNOW I HAD BOUGHT IT UNTIL I STARTED GOING THROUGH SOME BOXES THIS WEEKEND FROM A AUCTION THAT I HAD PUT IN ONE OF MY STORAGE UNITS. COMES WITH CASE AND MOUTH PIECE. NO MAJOR DENTS OR DAMAGE. THE KEY'S ARE MOTHER OF PEARL AND THEY WORK RATHER SMOOTHLY ALTHOUGH IM SURE THEY NEED LUBRICATION OF SOME SORTS. ! I DON'T KNOW ANYTHING SO IM NOT GOING TO MESS WITH IT. IF THIS IS YOUR THING THEN TODAY'S YOU'RE LUCKY DAY!! : )