It turns out not to be so easy !
It's probably etched by some engraving technology, using a custom font.
But what font might come close ?
I took the effort of quickly redrawing the most distinguishing characters, in order to let MyFonts process a large scale black/white rendition of them:
The two results below showed up as similar, although not exactly the same:
Royal Street Light
All in all, I bet the font is just a simplification of the DIN Condensed Light font, making all strokes as straight as possible, and curves as parts of plain circles...
Oorspronkelijk geplaatst op Quora: Can someone help me to find type of font used in below image?"