This particular instrument is unusually small. Modern players need some time to adapt to the uncommonly small keys.

The reed-block, in other words, the entire instrument except for the bellows, can be inserted underneath the bellows into a hollow space. The bellows are hinged together and encase the instrument. In addition, the underside of the bellows is fitted with several small doors, boxes, drawers and a mirror. Both the bottom of the instrument as well as the reed-block-- including the keys-- are lavishly inlaid with ebony and engraved bone which is filled with black wax.
It is extremely lucky to come across an instrument such as this regal because, apart from its highly elaborate and beautiful decoration, it is also highly valuable musically speaking, undoubtedly reflecting a high level of workmanship inasmuch as it illustrates a very skilful and virtuosic use of these varying crafts.