Take a look at that dented up old bell now.
The customer didn't want to spend the money to have it re-lacquered. So with dents removed, the horn cleaned inside and out, all corks and felts replaced, valves oiled and slides greased, it went back into the real world.
Working out dents is a bill-by-the-hour charge. This repair took about an hour and a half making the total bill, with parts, around fifty-five dollars.