Movement: 6306, Seiko Suwa factory, Auto-winding, 21 jewels. I can not open the caseback, too tight, no picture of the movement. Crown: Original, screw, works fine.
Band: Used, "Bambi" made, it fits for wrist of 19.5 cm or less. Day/Date: Works automatically, also manually, Japanese kanji + English. Condition: Used, it runs well, +- 1 minute a day. For practical, everyday use, it would be advisable to have the movement cleaned and oiled. It is described on page 24, 68 of the book Japan Domestic Watch Vol.5 - SEIKO Automatic watch II. The item "Vintage 1977 SEIKO Automatic watch Silver Wave 21J 6306-8010" is in sale since Tuesday, August 6, 2019. This item is in the category "Jewelry & Watches\Watches, Parts & Accessories\Wristwatches".
The seller is "saitama_jp" and is located in Saitama. This item can be shipped worldwide.