A 9-linge Design with a canopy to shield the crystal (a certain amount of an obsession at some time, as we’ll see), the look didn’t quite get off and they're exceptionally scarce and very high-priced. In 1892 they launched the entire world to your minute-repeating watch—the 1st of its type. https://www.watchesworld.com/a-history-of-watch-reference-numbers/