My Mark VI euro model looked good for about 35 years and then started to turn dark BUT I would take it apart twice a year and polish it good. I picked up a new Yana soprano around 1980 from a dealer I knew that was about a year old, never sold and had terrible bleed. I find care is the most important on most horns. Martins seem to be the worst for wearing thus I will buy a good relac if it comes up. I do have a Comm II alot with the original lacquer that is great and the darkest gold I have ever seen. After the RMC buyout around 1961, the lacquer seemed to get better. Some newer horns have an epoxy lacquer that can hold up ver well but is not really a lacquer as we know it. I only have about 8 lacquered horns and the other 35 or so are either silver or gold plated, my favorite.