Original to Seiko Turtle 6309-7040 and 6309-7049.
Can be use as substitute to Seiko Turtle 6306-7000 and 6306-7001.
Unpolished bevel edges still visible.
Screw down locks and ball bearing works well.
Only crystal glass polished.
Please see photos for best description or feel free to ask or request. Thanks
GENUINE ORIGINAL SEIKO PARTS