The museum brought back fond memories of our visit to Easter Island a number of years ago. Other reviewers have stated that this moai is the only one (or one of 3, or one of 6, etc) of the Moai statues removed from Easter Island and currently on display outside the island. It is difficult for me to ascertain for certain from my brief Internet search, but there seems to be at least 8-10 other ones on public display outside the island. But it is stiil a very rare item and definitely worth seeing in person, especailly if you are not able to take the trek to Rapa Nui. It is one of the "smaller-sized" ones, but still worth seeing. The museum is inexpensive to enter (equivalent to a couple of US dollars) and small emough to go through is less than a half hour - or even quicker if you just want to skim through some of the less interesting rooms. If you have your own car, parking around the area may be difficult, but there are the parking "guides" who will help you try to find a place to park on the adjacent street - which is posted as parking only for museum visitors.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.