FYI, font isn't actually eroded, I just had a poor quality source to scan from.

Any help would be greatly appreciated!

As close as I can find is Linefeed (Regular) from Typodermic. But it is only close.

Linefeed from Typodermic is very similar to the Letter Gothic typestyle on Selectric typewriters. Both are monospaced, while the sample in question is not, so "only close" is right.

Take a look at Guarda Sans from Andriy Konstantynov. Again, not an exact match, but pretty close in most regards, and is variable width.