How much to bet on this River - NL25 Full House

[CrAcK_N_CoKe]

No info on villain.
This could be very good card or a bad one but im never gonna fold anyway so how much would you bet on this one?
Great spot for Overbet?

PokerStars Game #12770402538: Hold'em No Limit ($0.10/$0.25) - 2007/10/21 - 22:25:42 (ET)
Table 'Hyakutake IV' 6-max Seat #3 is the button
Seat 1: FrenchVanila ($14 in chips)
Seat 2: MaddieGirl ($29.25 in chips)
Seat 3: Tristsomfaen ($25.70 in chips)
Seat 4: CrAcK_N_CoKe ($24.50 in chips)
Seat 5: henkvoong ($10.90 in chips)
Seat 6: perfectpokar ($23.65 in chips)
CrAcK_N_CoKe: posts small blind $0.10
henkvoong: posts big blind $0.25
*** HOLE CARDS ***
Dealt to CrAcK_N_CoKe [2c 2h]
henkvoong said, "trust me i know"
henkvoong said, ""
perfectpokar: folds
FrenchVanila: folds
MaddieGirl: calls $0.25
Tristsomfaen: raises $0.50 to $0.75
CrAcK_N_CoKe: calls $0.65
henkvoong: folds
MaddieGirl: calls $0.50
*** FLOP *** [6s Ad 2s]
CrAcK_N_CoKe: bets $2.25
MaddieGirl: folds
Tristsomfaen: calls $2.25
*** TURN *** [6s Ad 2s] [4c]
CrAcK_N_CoKe: bets $3
Tristsomfaen: calls $3
*** RIVER *** [6s Ad 2s 4c] [As]
CrAcK_N_CoKe:Bet ???