Seiko Marine Master 300

My latest Seiko, the Marine Master 300.

When I saw the sales post in SCWF, I couldn’t resist and emailed Kucimo, who’s the seller.

After a few email exchange and googling around for his sales history, I was more assured about the transaction as it’s not a small amount.

So he shipped it out on Monday, and I got it on Wednesday ! EMS shipping rocks.

Upon receiving the parcel, it’s a real hassle to open it as it’s very well packed with multiple layers of tape but you will know that the watch is well protected and it will be safe and sound inside.

My first impression of the watch when I took it out, is WOW. The sweeping second hand, the solid 1 piece case (monocoque), the finishing, dial and hands, it’s a work of art.


A very solid and heavy piece

From my understanding, the 8L35 movement is a undecorated, unadjusted version of the Grand Seiko 9S55. A 26 jewels, automatic, 28800bph, capable of hand winding and hacking with 50 hour power reserve. It’s also known that the 8L35 along with other Grand Seiko movements are hand assembled in Japan by a team of 20.

I tried to hand wind the watch, same smooth sandy feel. Once the second hand starts sweeping, I can’t help but to stare.

Now for the rest of photos.


Lume is charged by the morning sun


No separate case back


Side profile, a common complain is the lack of a signed crown.


Side profile

One Reply to “Seiko Marine Master 300”

  1. Hellos I am Very Interesting in the (22). Sekonda alarm, Poljot 2612,1 I give you $130 (€105).

    My Email is [email protected]

    como se compra con usted? I am from Spain, who much money send from Spain? Thanks

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