This sale is for a Seiko 1970s Automatic Chronograph Watch Crystal.
Original Sternkreuz XMD 340.811 glass crystal , made in Germany and not a cheap acrylic crystal .
to suit the following models
6138-0010 , 6138-0011 , 6138-0012 , 6138-0017 , 6138-0019
6138-0020 , 6138-0030 , 6138-0031 , 6138-0040 , 6138-0048
6138-0049 , 6139-7000 , , 6139-7001 , 6139-7002 , 6139-7010
6139-7011 , 6139-7012 , 6139-7020 , 6139-7060 , 6139-7069
6139-7149T