A 144k serial number would be one of the very last horns made before the New Wonder II. Lester accidentally put in the wrong serial number in his letter. I wish I could see the bell engraving on that. It looks like a gold plated portrait model.Lester Young tenor saxophone and certificate of authenticity. Gift of Marshall Stearns, 1955. ENgraved on bell: MADE/BY/C.G. CONN.ELKHART/IND./U.S.A. On back of body: PATD. DEC. 8 1914/1119954/T/M144444/L. Lacquer worn. New neck. Vulcanized rubber Conn mouthpiece.