10/20 Live/deep, time for a thin value bet?

[Kirkrrr]

10/20 Commerce. UTG is a solid pro, CO is the Villain, he's an older Asian guy who literally just moved to our table and whom I have never seen before, so no reads whatsoever.
UTG ~ 4k'ish, me and CO have about 7k each, i think.
UTG opens to 100, CO calls, I call on the Button w. 7 [img]/images/graemlins/club.gif[/img]T [img]/images/graemlins/club.gif[/img], blinds fold.

Flop: 6 [img]/images/graemlins/heart.gif[/img] 6 [img]/images/graemlins/club.gif[/img]5 [img]/images/graemlins/club.gif[/img] (Pot 330)
UTG checks, CO instantly throws out 2 white chips, I make it 600, UTG folds, CO instantly calls.

Turn: 8 [img]/images/graemlins/diamond.gif[/img] (1,530)
CO checks, I check behind.

River: T [img]/images/graemlins/heart.gif[/img] (1,530)
He thinks for a few seconds and checks, I...

Thoughts appreciated,
Kirk