All original vintage Datejust in good vintage condition Rare Non Luminous Grey Sigma Dial 1601 with white text 3.2mil serial (circa 1973) No service history but movement is running well and date changes correctly 6251h folded link bracelet with 55 end links (full links)
Unlike Omega, Rolex did not differentiate the markings between their luminous and non luminous dials. So you will find all Rolex dials during this era marked T SWISS T. The tell is the hands -- if the dial is non-luminous the hands should be as well and visa versa. Best, T.