A "Sigma" dial is denoted by the demarcation of "T swiss T" by two small "σ" symbols. The sigma symbols indicate that baton hour markers and hands are made of white gold - in this example white gold. Back in the early days Italian collectors use to call Sigma dials "goute à prior" which translates to "a drop prior to." 

ABOUT THIS WATCH: 

Rolex Datejust 

REFERENCE: 1601

YEAR: 1973

SERIAL: 343XXXX

CASE: The steel 36mm case is looking nice and clean for its age. It has seen a polish in the past yet retains strong and full lugs. There is light wear throughout commensurate with age. The case is completed by a white gold fluted bezel which is in great shape. A brand new crystal has also been installed. 

DIAL:  The silver pie pan sigma dial is in great condition free from any patina or blemishes. The sigma dial is correct for an early 70s 1601. It has a linen texture and is completed by white gold baton hour markers and hands. 

MOVEMENT: Rolex automatic caliber 1575. The movement was recently cleaned and regulated by our watchmaker and is keeping time /- 6secs per day. 

BRACELET:  Comes with a 1969 folded link jubilee that has a lot of stretch. Due to the stretch we are throwing in a brand new Rios1931 strap. 

ACCESSORIES: Comes with an authentic Rolex service pouch and brand new Rios1931 strap  

BANK WIRE PRICE: $3,350 shipped.