The Omega Seamaster caliber 321 column wheel chronograph movement is considered one of the best vintage chronograph movements ever produced. The 321 was chosen to go to the moon in the Omega Speedmaster. This caliber 321 manual winding movement sparkles after a recent cleaning and all chronograph functions operate perfectly. The highly reflective metallic silver dial is original and looks fantastic. The hands are also original. This case has a light-rose gold tone. The 35mm 18k solid-gold case appears as if the sides, lugs, and bezel have never been polished. The beveled edges of this bezel are very sharp! The Omega crown is original. This 1963 Omega chronograph is truly a time capsule that was barely worn.