Genuine Miyota Winding Stem - 8200 Series (8215, 8205). Miyota part 065-212: fits 8200, 8205, 8215, 8230, 8260, 8270, 8N24, and widely reported for 8218, 8245, 8247, 821A and skeleton calibers 82S0/82S5/82S7.