Hello everyone! Listing a nice vintage time piece with beautiful lume patina, day function (you press the crown inwards to change the day -- how awesome!), and overall extreme legibility (6, 9, 12 indices are a nice size). Please do not hesitate to reach out with any questions! ​ 1970s Wittnauer Skin Diver Red. 4000 (watch only - no box/papers) case width: 37mm case height: 11mm (including crystal) lug width: 20mm movement: Wittnauer cal. 18c manual wind (approx 40rs power reserve) service history: recently fully serviced ​ price: $900 + Free Shipping (payment preference is PayPal) photos/verification: https://imgur.com/a/6LbTheX ​ thank you for your time in advance!