200nl: Can I fold a set here?

[TIGERsrm]

Villian is 17/9/1.9 This is from database can't recall any reads.

Pacific Poker
No Limit Holdem Ring game
Blinds: $1/$2
6 players
Converter

Stack sizes:
UTG: $49.2
UTG+1: $126
CO: $510.33
Button: $280.72
Hero: $209.3
BB: $341.35

Pre-flop: (6 players) Hero is SB with 4[img]/images/graemlins/club.gif[/img] 4[img]/images/graemlins/spade.gif[/img]
UTG calls, UTG+1 calls, 2 folds, Hero calls, BB checks.

Flop: 4[img]/images/graemlins/diamond.gif[/img] 9[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/diamond.gif[/img] ($8, 4 players)
<font color="#cc0000">Hero bets $6</font>, BB calls, 2 folds.

Turn: T[img]/images/graemlins/heart.gif[/img] ($20, 2 players)
<font color="#cc0000">Hero bets $16</font>, <font color="#cc0000">BB raises to $39</font>, Hero calls.

River: K[img]/images/graemlins/heart.gif[/img] ($98, 2 players)
Hero checks, <font color="#cc0000">BB bets $77</font>, Hero??

Give him credit for 66/78 and move on?
I cant see anything I beat here, this is way too strong for a 17/9 to be a flopped 2pair IMO. Maybe T9 but I think he'd fold flop with me leading into this many players.