This is a vintage G. Pruefer Carl Fisher Artist Model clarinet and the serial number is 09633. It is in very nice and clean condition and I haven't play tested it at all. The keys pop up and down smoothly and the pads that are on it look to be in nice shape and a couple of the keys are missing a pad. The wood pieces show only a few light marks and I show a number of photos of all of the names and numbers that are engraved on the piece. The mouthpiece is made by The Woodwind Co. Steel Ebonite K9 model mouthpiece. It doesn't have the original case and has the soft case that is shown.