I'm passing on what seems to be interesting information:
My husband Manfred Kunkel is a German trained watchmaker now living in Australia. He has a large number of spare parts for Seiko Watches from the 1940s till the mid 1980s for all calibres.
As these are not easily available any more, anyone who needs any such parts can contact us on this email address.
Roberta & Manfred Kunkel.