rolex oyster perpetual date 1500 grey dial 15200 and the major feature is

and the major feature is that the indexes at 6 o'clock and 9 o'clock are thick

For 19mm width

This 6146-8010 had been produced for only 1 year

The catalog of the time says

Ref: 7548-700B

rolex oyster perpetual date 1500 grey dial 15200 and the major feature is1926 32 34mm Ref. 1500196080Ref. 1501(1501) 1960 Cal. 1570 Airy's1 5(50m) Specifications Brand: ROLEX Model: Oyster Perpetual Date Ref: 1500 Year: 1970 Movement: Self Winding Cal. 1570 Case: 34mm Material: Stainless Steel Lug Width: 19mm Includes: Folded Bracelet 7835 Bracelet Length: 11 Links ( 17cm) Completely serviced by our watchmaker The crystal has been replaced with a genuine Plexi crystal 5BAR(50m) water resistance has been tested 1 year