This idea is supported by the formal script used for the addresses below. While the image is too small to reliably compare differences between repeating glyphs, there are some details that are very difficult to accomplish with metal type: even with letters cast on a sloping body, swashes like the N in Nice would require massive overhangs (not feasible, certainly at this small size – they would break off) or ligatures/logotypes (unlikely). It’s similar for the vertical dimension, see the descender line of p in Montparnasse vs. the top extreme of P in Paris. And if the script was engraved, then it’s only logical that the sans-serif caps were done in the same technique.
Kevin’s suggestions are spot on for typographic options.