Gillette razor blade cases were normally part of razor sets that were sold as premium razors. This particular case was available with a few models in the era from around 1906 to 1920, so they are more than a century old! Use them to complete your vintage razor set, or as part of your everyday kit. They are obviously great travel companions to keep your blades 'fresh and safe' They are also great to store your used blades until you have a few to tape up and discard safely.