Should I value bet this river?

[modaddy]

New to table so no reads yet... was my river call too wimpy?
What kind of hands do you think the typical player is leading at the river with (and calling a river raise) after my turn check?

Party Poker No-Limit Hold'em Tourney, Big Blind is t50 (10 handed) converter

UTG+1 (t1405)
UTG+2 (t3000)
MP1 (t1920)
MP2 (t3755)
MP3 (t2561)
Hero (t1865)
Button (t5120)
SB (t1435)
BB (t555)
UTG (t1839)

Preflop: Hero is CO with A[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/spade.gif[/img].
<font color="#666666">5 folds</font>, MP3 calls t50, <font color="#CC3333">Hero raises to t200</font>, <font color="#666666">3 folds</font>, MP3 calls t150.

Flop: (t475) 2[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP3 bets t50</font>, <font color="#CC3333">Hero raises to t500</font>, MP3 calls t450.

Turn: (t1475) 2[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
MP3 checks, Hero checks.

River: (t1475) K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP3 bets t100</font>, Hero calls t100.

Final Pot: t1675

Results in white below: <font color="#FFFFFF">
MP3 has Td Ac (two pair, tens and twos).
Hero has As Qs (flush, ace high).
Outcome: Hero wins t1675. </font>