Interesting. A little research indicates that a Bassett clarinet is typically in the key of A, and 4 semitones below a Bb, instead of just one semitone below a Bb which describes the typical A.
Perhaps this, like yours, is a Bassett?
Airflyte--yes, this is a most unusual clarinet, and the price it has escalated to, so soon from just .99, is abundant and irrefutible proof that these don't come around often. No doubt the entire clarinet world is watching this auction like hawks on prey.