I think these two are by far the coolest Seikos available, with the Darth Mas being one of my favorite watches overall. The SBDC085 was a Japanese exclusive, and is rarer than many “limited edition” Seikos. It has a chapter ring (which I prefer) and the ring, indices, and bezel are perfectly aligned. The black zaratsu polished and DiaShield coated case and yellow minute hand give it tacticool vibe. The taper of the case is reminiscent of the Christopher Ward lightcatcher cases, and I believe is way nicer than the later 62Mas releases. The watch overall feels better built than the Mas’s that replaced it. The SPB313 has a lovely white dial, with baby blue indices, and that sexy pop of red on the seconds hand (which is the best seconds hand design Seiko makes imo). The watches are mint, with even the clasp having nearly no marks at all. I see one desk mark on the SPB313 clasp with my eyes but it is so faint I couldn’t capture it in a photo. The SBDC085 bracelet was sized then not worn, I’ve had it on the rubber since purchase. The blue caseback sticker is still on the SPB313, as I’ve worn it only maybe 5 times total. SPB313 - $699 shipped CONUS. PayPal F&F preferred. SBDC085 - $649 Shipped CONUS. PayPal F&F preferred. Buy both and I’ll discount to $1300 and include a black 2 watch travel case. I am negotiable but not open to trades (unless you want to trade a Longines Spirit 40 or 42mm in white). I can facetime, provide social media etc. to verify if buyer requests.