Just opened the back case of a 39 years old Seiko 5 [4206-5280] ladies watch with a 4206A movement.There was a tiny screw stuck under the rotor.After removing it ,the watch started
Seiko 5 5206-0420 Ladies Automatic Day & Date 1990's – Temple of Time
Watch Repair] Full Repair of a tiny Seiko 4206! Report and Video in the comments : r/watchrepair
SEIKO 5 Automatic 4206-0332 Silver Tone Wind-up Analog Women's Watch Sz. 6 3/4" | eBay
Sold at Auction: Stainless steel ladies round SEIKO 5 Day Date Automatic watch 4206-0010 with panthere style bracelet