English Besson SN# 73625 According to the Music Trader serial number dating website It appears that this horn was made around 1902. Key of A & Bb Lots of engraving Extra tuning shank, tuning slide for key of A. Original #3 Mouthpiece. Chicago Bore, Measuring at the 2nd slide it mics out at .464. Made In London. Stamped on bell with a big * Comes with original case. More pictures upon request.