I just picked this up. It is a seven-day set of straight blades that interchange with the handle. The days of the week are written in French across the spine. The box has "Semainier" . The French word semainier translates to "tall chest with seven drawers" in English. Other than the days of the week, there are no markings on the blades or the handles. The box is really nice wood with velvet and leather interior and brass fixtures. The inlay work appears to be real gold. I would appreciate any information if anyone has a clue about what I have or can direct me where to look.