Yamaha Cornet YCR3330

I've made various modifications to a standard 3330. The sound's attack and definition are clearer, making it much easier to play.
The valve stems have been replaced with 8330EM parts from the genuine ones. The piston guides have also been changed from plastic to brass.
The bottom caps have been replaced with Buzz heavy-type ones.
There are some minor dents on the body, but none that affect playability, and no significant plating peeling. The spit valve cork has been replaced with a new one. There is no stuck tubing.
A red bell short cornet in this condition is quite rare, I believe. According to old catalogs, the bell is made of gold brass, and this appears to be a model produced between 1985 and 1997.
A genuine 11E4 mouthpiece will be included.
Thank you.