I've been tinkering with a standard 3330. The sound's attack and definition are much clearer, and it's become significantly easier to play. The valve stems have been replaced with 8330EM ones. The piston guides have also been changed from plastic to brass. The bottom cap has been replaced with a Buzz heavy type. The body has some dents here and there, but none that affect playing. There are no major areas where the plating is worn off. The spit valve cork has been replaced with a new one. There is no sticking in the tuning slides. I think this is a rare condition for a red bell short cornet. According to old catalogs, the bell is gold brass, and it appears to be a model produced from 1985 to 1997. The mouthpiece will be the original 11E4. Thank you.