I am looking at buying a C trumpet online, I'd like to know if $600 or so is a good price for this horn...or if indeed it IS a good horn? "Listed is an Olds Ambassador C trumpet in excellent condition. This horn started as a Bb Olds Ambassador and converted to a C. I used as many original parts as possible during the conversion. Slides, leadpipe and bell were cut to size. This trumpet went through an overhaul and now has a bright silver plate finish. No dents and no dings. Serial number places the original manufacture date around 1976, but the conversion was done this past month of October."