Seiko 6139-7100 ‘Helmet’ Chronograph

I have been getting a lot of requests lately for Seiko servicing and restoration. Traditionally, it wasn’t something that I did as I stuck to Swiss movements but the more I have been doing the Seiko 6139 the more enjoy them. I think they are going to be something that I start taking in a lot more of. I know that many people collect them but there aren’t many watchmakers who take them on.

Vintage Seiko’s can be had for not much money in today’s insane vintage market. They are an incredibly reliable movement and having been designed in 1969 they still stand up today. They share a lot of similar architecture with the Rolex 4130 movement which was developed several decades later.

Here is the Seiko 6139-7100 ‘Helmet’ chronograph. Such a great design in my opinion.

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