Rolex automatic calibre 1570, lever escapement, 26 jewels, compensation balance, 19, 800 BPH, Kif-Ultraflex shock absorber; silvered satin finished dial, applied faceted baton indexes with luminescent dots above, luminescent hands; stainless steel Rolex Oyster case with screw-down crown and case back, polished chamfered bezel, the tops of the lugs and centre of the case back with satin finish; case, dial, movement and crown signed; with original stainless steel Rolex heavy gauge link b...racelet and adjustable folding clasp. Working order.Measurements Diameter excluding winding crown: 34.5mmLength including lugs: 39mmDepth to centre of crystal: 12mmLug gauge/strap width: 19mm The winding crown comes off when you have to set the time on the second dial and needs to be fixed. I am selling as spares and repairs.