For sale is my Seiko Tuna SBBN031. I bought this a few weeks ago from Seiya, this model has been recently discontinued, and is the last batch with the "Marinemaster" text instead of the Prospex X, which I much prefer. Unfortunately (or fortunately) I have a surprise incoming, so this necessitates selling off another watch!

If you are looking at this listing, then you already know the history and specs of this Seiko legend:
-amazing lume
-rock solid, premium 7C46 movement which was specially developed by Seiko for these robust divers. Metal, 7 jewel construction with 5 year battery life and EOL indicator
-Diashield hardening coating on the beautiful brushed shroud and clasp
-Ratcheting titanium clasp for on the go adjustments.

Condition:
I sized the bracelet but never wore it (wore on rubber exclusively). I do not see any marks on the bracelet with the naked eye. There is a tiny, tiny scratch at the edge of the shroud at the 56 minute mark (refer to the last picture, but it really is not that visible unless you look for it).

I am asking $850 NET to me + actual cost of shipping CONUS. I paid full price +$90 in duties a few weeks ago only, so my few hundred dollar loss is your gain!

Please let me know if you have any questions.