This auctioned on 01/01/99 19:55:54 PSTat eBay for $255.
Here's what the seller had to say about the horn...
It has been determined that this is a very rare item, probably between 1901 to 1904, at which time there were only about 1000 manufactured per year. Overall length is 21" without neck, and the serial number 8678 is the only identification on the instrument.