C. Mahillon (1950)

This is a model 412 piston horn with crooks for F and Eb, made in 1950 by C. Mahillon succ. J. Smits. Older versions of the 412 model had a removable valve block to play the instrument as natural horn, but unfortunately this is a later version with a fixed valve block.
It is in good condition, with case, both crooks and original mouthpiece.