For those that haven't seen both of the 8/Ms, here they are in the same rack, in as-found condition: http://i.imgur.com/c9Dntqv.jpg
The color difference between an 8/F and 8/M seems more than just subtle color variations between paints. The 8/M has two shades of orange, whereas the 8/F seems to have a distinctive yellow and orange palette. Here's an 8/L with memory expansion box: http://www.horniger.de/computer/dec/pdp8l_101.jpg Kyle
