Maximilian Schwedler was a flautist (principal flute in the Leipzig Gewandhaus Orchestra) and an innovator of the conical flute who had already experimented in the past with the multiplication of keys to facilitate certain passages and make certain trills more comfortable. The first model was released in 1895, followed by other improved ones featuring two typical ring keys, so that this model was colloquially called the "flote mit brille," meaning flute with glasses. The Schwedler flute, mainly produced by Kruspe of Leipzig, gained the favor of German professional flutists who had long been undecided between this type of flute and the Boehm flute. It can be said that only with the decline of the generation that had played in the early 1900s did the Boehm flute definitively establish itself in Germany, albeit with certain characteristics that recalled the Schwedler, such as the heavy wooden body (Schwedlers weighed over 500 g) which guaranteed a full and powerful sound in the lower octave. But aside from the fact that there are still flutists today who use and appreciate Schwedlers (if only out of national pride), I believe enthusiasts should approach this type of instrument, if only because it represents an evolution of the Baroque flute and its associated sound quality, not to mention that much late nineteenth-century music was written with this flute in mind. The example I'm offering you isn't named, but it's certainly a Kruspe, built in the early 1900s. Its wood and action are in excellent condition, it plays well, has an A of 435, and weighs about 520g. The original case is excellent.