Seiko 5] bought a vintage Seiko 5 (1977) from eBay. I know it's not the most expensive watch but I thought I'd be a great timepiece to start of my watch collection! :
1977 Seiko 6309-5059 Blue "TV Dial" Men's Automatic Watch Original Band Rare Vtg | eBay
Vintage 1977 SEIKO 5 Date Day Men Watch 17 J New Bracelet & Crystal Works 6309 M | eBay
Catalog: 1977 Seiko USA Watch Catalog — Plus9Time
Vintage 1977 SEIKO 5 Date Day Men Watch 17 J New Bracelet & Crystal Works 6309 M | eBay
Seiko Type II 7546-7000 - Crazy dial - July 1977 - Original bracelet - JDM [EU Seller] | WatchUSeek Watch Forums
Seiko 5 6309 5030 Rare Black Dial Tv Case for $245 for sale from a Seller on Chrono24