The beamspring legends have absolutely nothing to do with Helvetica or any other printers’ typeface.
They’re some ad-hoc thing made with an engraving machine, just like the doubleshot legends used by everyone else in the 50s–70s.
Also, anyone who isn’t making a corporate logo for a boring 60-year-old company with >10000 employees should never use Helvetica, which is probably the most misused typeface in existence. Helvetica screams “I’m lazy and have no taste, and proud of it.”
you guys have absolutely no clue what you are talking about. Gotham was simply perfect for granite and I don't regret it for a moment (and the success of the set it is quite a confirmation of that).
Or they just have different preferences than yours...