RARE SWISS MONDIA 777 AUTOMATIC USED VINTAGE GENTS  WRIST  LEATHER WATCH  . WORKING PERFECTLY FINE BUT .THE WATCH IS OLD AND HAS BEEN USED FOR SO MANY YEARS, THE DATE AND DAY SEEMS TO BE WORKING BUT UNABLE TO SET THE DAY, SCRATCHES CAN BEEN SEEN ALL OVER THE GLASS DOWN TO THE BACK CASE . IT HAS NEW LEATHER NOT ORIGINAL STRAP . AS FOR THE DAY AND NOT THE  DATE IT SEEMS WORKING FINE,CASE # 92-558-20....MECHANISM  # AS 1882/83 1886