Up for sale here is my Japan only Seiko SBBN039 PADI Marinemaster Tuna. It's a limited edition of only 700. It's quartz and comes fully boxed with tags and manual etc... The blue accents on the bezel, screws and crown really make this one stand apart from the standard Tunas but not in a garish way. These are getting exceptionally rare now, in Japan and even more so outside of Japan. It has been worn regularly in a rotation and does have some light marking on the shroud (case) sides and the strap shows some wear too. Except for those though, it's in amazing condition. I'll post photos soon as I'm listing now whilst the cheaper listing offer is on and I'm not at home.
eBay