so, SKX0031J? It's a JDM variant?
EDIT:
I got hold of the seller - he says it's a 7S26-0050 - aren't those the white-faced ones? SN 670005. He says he "bought it new" but "off the internet". No box, threw out the extra links. Wants $75, says he just never wears it. Prefers plastic watches like G-Shocks.