THIS A RARE VALJOUX R77 I BELIEVE FROM THE 1940'S. HEUER USED THIS MOVEMENT, AS WELL AS SOME OTHER LARGE NAMES. THIS MOVEMENT IS MARKED R 77 AND COMES WITH THE CASE WHICH IS STAINLESS STEEL. THE CASE HAS A SERIAL NUMBER OF 757564. THERE ARE SOME SMALL DENTS TO THE BACK COVER. THE OPENINGS FOR THE PUSHERS ARE OVAL. IM NOT SURE IF ALL OF THE PARTS TO THE CHRONOGRAPH ARE THERE, IT SEEMS PRETTY COMPLETE, IT IS SOLD UNTESTED AS IS. THE MOVEMENT IS 30MM ACROSS AND THE CASE IS 33MM. GREAT PROJECT!!