What you describe are custom worked pieces, special ordered by the buyer - those usually went directly to his place of residence, or the town he lived in - just like ordering from a Sears, Roebuck catalog.
For that matter, at the turn of the century, those folks could supply engraved pieces - but they weren't sitting on a glass shelf.
There was no 'gun culture' like there is today - no shops like 'Collectors Firearms' existed.
Scouts Out!