Could be Jerome Thibouville Lamy, not a stencil, but an excellent old maker. It could be a little on the old side, depending, for a student to play right now. I see a lot of them on online auctions from the late 1800s to the 1920s. They can be a bit more fragile and older can often mean a lot of potential for wear/wood shrinkage (lower joint posts then get loose, causing keys to be sluggish) etc.. and I don't feel they play quite the same as newer instruments. I feel more modern instruments 1930s-1950s+ have a better combination of construction, tuning, tone and projection. In my experience, older instruments are often lacking in at least one of those areas and I think others have made similar observations. There is also Ch. Jerome, which I don't know much about, but I think there is a thread on here. Also very old, though.