JCII Camera Museum has inherited most of the stocks in Pentax's camera museum.
http://www.jcii-cameramuseum.jp/
JCII stands for Japan Camera and optical instruments Inspection and testing Institute, which is a little bit weird name. But it's Japan Camera Museum in short.
Have you ever visited the CP+? If so, you may have seen some old cameras and lenses exhibited there. They are from Japan Camera Museum which sponsors the CP+.
---------- Post added 08-08-14 at 05:15 PM ----------
Those are photos taken before the closure.
PENTAX CAMERA MUSEUM ????????????????? [?????]?????????by POCHI?? - ??????? ?????: 【??】????????????
It looks like Pentax camera museum had not only its own legacy gears but also other brands such as Leica and Rollei. By the way, don't be afraid of clicking the links above which show the sequence of "?". They are all blog posts.
Last edited by Daikokuya; 08-08-2014 at 05:20 PM.