FWIW - The plating appears to have worn off the valve block, possibly the result of having a valve guard on it long enough to cause damage, and it often doesn't take long for a valve guard to ruin the finish underneath it to some degree. Some people don't mind the wear; others would want to deal with the situation. If left alone, oxidation will continue, although eventually patina will develop to slow this process. It's likely you'd have to deal with the smell of brass on your hands, and there's also the likelihood that there is a small amount of lead in the brass that can contaminate your skin. The more expensive the solution to the corrosion, the more effective the result. Replating would be ideal, but not cost-effective. Compromises include lacquering or waxing the area.
Overall, if this trumpet has good valves and it plays well, the price looks pretty fair. At this price, I wouldn't let the appearance prevent me from buying it. I'd try to negotiate for a lower price, though, just to see if it would be possible to pay less.
@walter-sk Microns separate easy and hard removal. It is still a simple job for a tech but "all your strength" could make the repair very costly.
I have had students with this problem. It can happen if one lays the trumpet down with the 2nd slide underneath. It takes a small hit (no dent) and it is microns out...
As far as modern, scientifically documented data, there are literally numerous peer reviewed studies, for example showing that soap and water, is far more effective than alcohol based hand sanitizers for prevention of Clostridium Difficile infections in a hospital or office setting.
Hand washing with soap and water is significantly more effective at removing C. difficile spores from the hands of volunteers than are ABHRs. Residual spores are readily transferred by a handshake after use of ABHR.
Thanks for understanding.
I could not agree more on this subject. Because of C. Diff... soap is all I use going in and out of all rooms. AND lest one forget, the soap wash must be done for at least 20 seconds (the time it takes to sing "Mary has a little lamb"). This I taught to all of my medical students before I took them into the Neonatal Unit to teach them how to perform the Newborn exam.
@administrator it’s a medium bore made in 1956. @Newell-Post the corks and felts are in good condition and appear to have been recently replaced. This was part of the pleasant surprise. I expected a horn of that age to be pretty worn or have come out of a closet with stuck slides, rotten corks etc. I’d even researched replacement lead pipes in case that was necessary, but the original is as clean as a whistle. @Dr-GO yes 100%. I particularly love the tonal range that it provides.