What do you make of this 3-bet?

[Garland]

No particular read on my opponent...

What do you make of this mini 3-bet? What do you put him on?

Garland

Ultimate Bet No-Limit Hold'em, $4 BB (9 handed) converter

UTG ($200)
UTG+1 ($406.20)
MP1 ($105.80)
MP2 ($572.20)
MP3 ($1044.40)
CO ($369.70)
Garland ($392)
SB ($94.90)
BB ($265.20)

Preflop: Garland is Button with 7[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/spade.gif[/img]. UTG posts a blind of $4.
UTG (poster) checks, <font color="#666666">1 fold</font>, MP1 calls $4, <font color="#666666">1 fold</font>, MP3 calls $4, <font color="#CC3333">CO raises to $17</font>, Garland calls $17, <font color="#666666">2 folds</font>, UTG folds, MP1 calls $13, MP3 calls $13.

Flop: ($78) J[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/diamond.gif[/img], 3[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
MP1 checks, MP3 checks, <font color="#CC3333">CO bets $23</font>, <font color="#CC3333">Garland raises to $66</font>, MP1 folds, MP3 folds, <font color="#CC3333">CO raises to $109</font>...