Seiko Vintage Big Crown 62MAS
Posted: October 9th, 2021, 8:51 am
It’s 1965 and just a year after the Tokyo Olympics were held, signaling Japan’s re-emergence from decades of post-war rebuilding. 12 years after Blancpain released the Fifty Fathoms and 11 years since Rolex released the Submariner, Seiko enters the fray with its first dive watch, the ‘62MAS.’

The ‘62MAS’, which was big for its time at 37mm, gets its nickname from the first two digits of its 6217 reference number and MAS from "autoMAtic Selfdater," an automatic movement with date.

And yes, there are big crown and small crown variations.

There’s a lot of fascinating resources on the web, but I would really recommend you visit Ikigai https://www.ikigai-watches.com/collecto ... 62mas/5020
To make a long story short. I descended into Seiko madness over the last week and eventually focused my insanity on the 62MAS, looking into Seiko’s own homage, the SLA017 and to the plethora 62MAS inspired Seiko prospex models which are all over 41mm.
I really wanted to get my hands on something closer to the original 37mm size and searched through the usual modding sites, Yobokies, namokimods, DLW to name a few, as well as the homage makers Steeldive, San Martin, Heimdallr amongst many, which are 41mm and have ceramic inserts.
Eventually I landed on the FiftyFour homage after reading a post in HF
. The FiftyFour was 37mm and from the specs close enough for 1/20th of the modern Seiko SLA017 homage.

I wanted one NOW! But it’s Golden Week holiday in China, and I really had to scratch this itch. I had mentioned in an earlier post that Singapore has a vibrant local Seiko modding community. I went through some online listings and found this.

That’s right. A 37mm FiftyFour homage with Seiko 62MAS dial. Purchased it an hour ago. On my wrist now
The seller is tight-lipped about where he got the dial. I’d love to know if anyone knows.

I’m resisting the urge to vintagize this baby to something closer to this.

But I think I’ll keep it box fresh for now.
PreV tax

All photos courtesy of the web, except of course my poor photos.
Thanks for looking

The ‘62MAS’, which was big for its time at 37mm, gets its nickname from the first two digits of its 6217 reference number and MAS from "autoMAtic Selfdater," an automatic movement with date.

And yes, there are big crown and small crown variations.

There’s a lot of fascinating resources on the web, but I would really recommend you visit Ikigai https://www.ikigai-watches.com/collecto ... 62mas/5020
To make a long story short. I descended into Seiko madness over the last week and eventually focused my insanity on the 62MAS, looking into Seiko’s own homage, the SLA017 and to the plethora 62MAS inspired Seiko prospex models which are all over 41mm.
I really wanted to get my hands on something closer to the original 37mm size and searched through the usual modding sites, Yobokies, namokimods, DLW to name a few, as well as the homage makers Steeldive, San Martin, Heimdallr amongst many, which are 41mm and have ceramic inserts.
Eventually I landed on the FiftyFour homage after reading a post in HF


I wanted one NOW! But it’s Golden Week holiday in China, and I really had to scratch this itch. I had mentioned in an earlier post that Singapore has a vibrant local Seiko modding community. I went through some online listings and found this.

That’s right. A 37mm FiftyFour homage with Seiko 62MAS dial. Purchased it an hour ago. On my wrist now


I’m resisting the urge to vintagize this baby to something closer to this.

But I think I’ll keep it box fresh for now.
PreV tax

All photos courtesy of the web, except of course my poor photos.
Thanks for looking
