1976 Seiko SpeedTimer Chronograph (Ref. 6138-0040) "Bullhead"
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1975 Seiko Bullhead Chronograph
Seiko BULLHEAD 1976 Vintage automatic chronograph watch Cal.... for $1,497 for sale from a Trusted Seller on Chrono24
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Seiko Speed Timer Bullhead Chronograph Ref.6138-0040 Automatic Cal. 6138B: ashlandwatches.com
![Vintage Seiko] 1975 Bullhead : r/Watches](https://preview.redd.it/5i37vdtv5tg01.jpg?width=640&crop=smart&auto=webp&s=f4f608abab332fa8b4e9a5c5de80f2862b9e881a "Vintage Seiko] 1975 Bullhead : r/Watches")
Vintage Seiko] 1975 Bullhead : r/Watches
TBT The Seiko Bullhead 6138-0040 Chronograph
