In the 1980s I was involved in creating a poster in screen-printing technique (two colors!) and I seem to remember we prepared the type using rub-on letters that were then enlarged. I already found the main type to be best resembled by Compacta (and not Helvetica UltraCompressed), but we had a "LIVE" sticker on the poster with slanted letter ends at the L and E, see here:
http://www.the-magictones.de/LIE.gif
I already tried Identifont and uploaded the file to WhatTheFont, to no avail.
Any hints or ideas?
Thanks a lot,
- Michael