[SOLD OUT] Genuine NOS Golden Push Button for SGP cased Seiko 6138-8020/8021 etc.

Genuine NOS Golden Push Button for SGP cased Seiko 6138-8020/8021/8030/8039, 6139-6012/6015. New old stock, loose without packaging. USD30/pc.

*Note: complete with original gasket but all stiff due to age.