Oh, absolutely. The earliest ones are basically brass cylinders and a single winding key, the rest of the mechanism a neat, almost child‑like puzzle. By the Victorian era the boxes became a mini‑factory—multiple cylinders, hidden gears, and a tiny tuning fork to keep the whole thing in pitch. The layout changed to accommodate more tunes, so the gears were layered like a small Swiss watch. In the 20th century, with mass production, the design streamlined again; the gears got smaller, the tuning mechanisms turned from hand‑adjusted to pre‑set. I’ve already filed every variation by year, maker, and even by the exact pitch of the tuning fork. Let’s pull up the catalog and see how those tiny cogs evolved.