Apollo 10 Hatch

The MSSC displayed the Apollo 10 hatch, without much of its hardware. Apollo 10 itself is in the Science Museum in London, England (and that's the reason I can only claim to have seen all of the manned command modules in North America).

I've dug up a photo of the Apollo 10 hatch when it was still attached to the CM and still had all of its hardware.

I also have a page with additional information about the Apollo unified hatch.