It is unknown what happened to these statues, but with Argonaut closing, it is sadly unlikely that they still exist.
Croc: Legend of the Gobbos
The earliest statue was displayed at ECTS in 1997, and features Croc standing upright.
This statue was on display at the E3 convention in 1998. Like the previous statue, Croc is upright. It's also possible that this is the same one from the ECTS convention, just shown at a different angle.
This statue was also on display at the E3 convention. It's unique in that Croc is shown swimming, or doing the Croccy Paddle.