I know it isn't Gotham, but that's as far as I know. Help!

[FPOguy]

See attached JPG. And thank you in advance for totally saving my bacon on this one. THe suggestions on Matcherator are so close, I can’t really tell what is closest. THe G and R seem to be the main letters to look at.

[Typehuile]

It looks very similar to Gill Sans Semibold, manually condensed to about 85%. But there are differences, mainly the capital G, and also the M and W in your sample have truncated downward angles but they are pointed in Gill.