Here are some photos of a mint/NOS MXU-161/P knee board I picked up last week with a nice 1967 contract date. I haven't put any batteries in it yet to see if the light works The foam strips on the back are pretty much gone/rotted away but other than that it looks brand new.
I've seen other knee boards for sale - a Mark 2A, a MXU-5/P, and an MXU-163/P. They all look pretty much the same to me but I'm assuming they are from different eras? Maybe the Mark 2A is a USN version? Or is the only way to tell is from the contract info?
Edited by viking73, 01 December 2017 - 04:36 AM.