value bet this?

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1st hand at table and no reads. Who bets this river?

Party Poker 5/10 Hold'em (6 max, 5 handed) converter

Preflop: Hero is BB with Q[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/spade.gif[/img]. MP posts a blind of $5.
<font color="#666666">1 fold</font>, MP (poster) checks, Button calls, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises</font>, MP calls, Button calls.

Flop: (6.40 SB) K[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, MP calls, Button calls.

Turn: (4.70 BB) A[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, MP folds, Button calls.

River: (6.70 BB) 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>