First of all, I'm not a designer! :( I've tried Helvetica Condensed and Akzidenz Grotesk. Do you have any Idea what font is it?
Carattere IdentificatoHelvetica 77 Bold Condensed Suggeriti da rocamaco
You're right, probably it's "Helvetica 77 Bold Condensed", not totally sure, but most possible...
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