This is the rare green dial version known as 'the hulk'. The spring in the screw-down crown has either broken or has weakened, so the crown action is a bit hit and miss. In my experience, this is a common issue with Typhoons.
Vintage Seiko 5 Automatic || White Dial || Men's Vintage Watch ||
Vintage Seiko 5 Automatic || Gold Dial || Men's Vintage Watch || 21 Jewels
Vintage Seiko 5 Automatic || Gray Dial || Men's Vintage Watch || 17 Jewels
Vintage Seiko 5 Automatic || Classic Gold Dial || Men's Vintage Watch ||
Vintage Seiko 5 Automatic || Gray Dial || Men's Vintage Watch || 21 Jewels
Vintage Seiko 5 Automatic Silver-Grey Dial Original Japan Men’s Watch 7019-8180.