Blue AR Coating Crystal Glass Seiko 6138 6138-0030 6138-0031 Kakume 340W14GN This Sapphire crystal has AR

This Sapphire crystal has AR Blue Coating

the gear is for changing indicator ring  or inner bezel

It is for sell New Mineral glass for Seiko 6138-0040 6138-0049

Watch is NOT included

and 7005- 8140

Blue AR Coating Crystal Glass Seiko 6138 6138-0030 6138-0031 Kakume 340W14GN This Sapphire crystal has ARNew Blue AR Coated Mineral Glass for Seiko 6138 0030, 6138 0031 It is made from Mineral Glass, The Ar Coating is helping to protect your Dial and hands from the sun light or UV lights. The Blue Ar coating glass in some angles it look the watch does not have a crystal on it, so you can see the dial and hand very clearly. The Ar coating is not visible in some angles. Diameter is 34 mm. The watch is NOT included. Please do not hesitate to contact us if