In reply to NashvilleTypewriter.

Kirk: First, solid Royal identification, though the typing line indicator and spring loaded card fingers are reasonably distinctive.

Second, nice crack at a typeface identification for such a limited sample. I pegged it as Royal Pica Double Gothic because the M is slightly more rounded at the top, the A in Manifold is flat rather than sharp, and the 2, 3, and 7 are all more distinctive, though not seen in the original, limited "sample" you saw.

For those who like to play "name that typeface", above is a full preliminary (pre-servicing) sample from this Royal HHS if you want to make additional guesses. I'll mention that like many double gothic faces, the numeral 1 is done with a capital "I", though on this machine the 1 doesn't have a serif as shown in Ted Monk's 1964 NOMDA Blue Book.

For the record, most of the slugs have a "PG" foundry mark.