1975 Rolex Datejust (Ref. 1603) Blue Sigma Dial W/ Rolex Service Paper

The Rolex Datejust is one of the most iconic and most beloved Rolex watches ever made, even though the Datejust was launched in 1945 it has remained a timeless classic and is instantly recognizable as an item of refined quality and functional design. The Datejust can be worn just as easily with a suit as it can be with jeans and a tee shirt.

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A Sigma dial is a Rolex dial named for the letters printed at the bottom of the dial below the 6 o'clock marker. Most Rolex dials are commonly marked with “T Swiss T,” under the 6 o'clock marker, however, a Sigma dial is marked “σ T SWISS T σ.” This signifies the use of gold components within the dial.

This piece would make an excellent start for a new vintage collector, or be a great addition to an expanding collection. We love the early Rolex Datejust for its simplicity and its classic sophistication.


Stock # RLXDJ1603-75/4
Brand Rolex
Style Datejust
Model 1603
Serial 39XXXXX
Size Men's
Material Stainless Steel
Dial Blue Sigma
Millimeters 36
Bracelet Rolex 62510H Jubilee Bracelet W/ 555 End Pieces


The impressive case retains very thick and symmetrical lugs that exhibit minimal signs of previous use. The stainless steel engine-turned bezel is in excellent condition and shows only gentle signs of previous use. The case back retains crisp finishing. The later Rolex 62510H Jubilee bracelet with 555 end pieces retains 20 links that show almost no stretch and will fit up to a 7 1/2-inch wrist. 


The exceptional "pie-pan" blue sunburst Sigma dial is in near flawless condition, showing no damage with only extremely subtle aging present. The tritium lume plots have achieved a wonderful light yellow coloration and display no degradation when inspected under U.V. light. The original tritium hands match the dial perfectly, showing no degradation when inspected under U.V. light. The metallic date wheel is original with "open" 6's and 9's.


The watch comes with Rolex service papers from 2007. The watch was recently serviced and is keeping time perfectly, backed by a 1-year warranty on accurate timekeeping.