Model brain

I am looking to commission the creation of a model brain. I require the model to be smaller than life-size human brain so that it is easier to transport and can fit in a variety of different sizes of display cases. The primary purpose of the model is for educational display, so the detail should be accurate and clear. To achieve a result suitable for the desired purpose, I prefer the model to be made out of plastic.
The brain needs detachable lobes that will contain information on them.