All the rest totally original. Its a stunner not another one like this anywhere. Crown screws down two turns. Time keeping is spot on over 12 hours.Someone messaged me to ask why there is no 6306 markings on the dial, I've had the movement out and there are no markings anywhere..... It can't be aftermarket I've owned this watch over 30 years and never had a new dial fitted its original to this watch. The item "Seiko vintage Diver 1979 6306/7001 Sapphire Crystal Rare Original 21 Jewel" is in sale since Friday, March 16, 2018. This item is in the category "Jewellery & Watches\Watches, Parts & Accessories\Parts, Tools & Guides\Watches for Parts".ala" and is located in Colchester. This item can be shipped worldwide.