Keep watching
Jim in Kansai notes that it is several weeks now since we ran his request for suggestions on repairing his old Seiko watch, but still no response. "I knew it was a long shot, but I'd like to thank you anyway, for trying."
Two long shots Jim, especially since you live in Nara. There is a Seiko museum in Tokyo (Seiko Tokei Shiryokan) on (03) 3610 6248. They have a customer service center in English and Japanese on (toll-free) (0120) 612-911; it's open weekdays from 9.30 a.m.-6 p.m.
Also, I found an online forum for Seiko enthusiasts. If you search "Seiko watch museum" on the Net, it's the third listing down.