Ah, a leather‑bound compass, you say? The very smell of old leather, a hint of iron rust, suggests a mid‑to‑late nineteenth‑century design, perhaps the kind a surveyor or a mountaineer in the early days of the Rocky‑Mountain trails might have carried. Those were the days when brass dials were etched by hand, the needles were set in silver, and the cases were padded with soft leather to keep them from cracking in the cold. If you trace the style of the brasswork, you might spot the distinct filigree that was popular around the 1870s, right before the introduction of the first mass‑produced pocket compasses. In short, think about 1870‑1890 – the age of the “Great Surveyors” and the early pioneers who relied on a simple, reliable instrument to chart the wilderness. If you find a maker’s mark, that will pin it down even more precisely. Happy hunting!