Vintage Rolex GMT 1675

This is my GMT Master 1675 from 1972
It’s still running at COSC standard
Cal # 1570 on folded 7836-1 72/280 bracelet
Original box and paper
Mark 2 dial and original tritium hands, open 6 and 9 silver disc. Last two service, parts and receipt, booklet. Valued at Kaplan’s