To each his own, but my personal experience with case colors: leave them alone. Protective varnish of any kind can peel, and when it does, the case colors go with it. It ain't pretty.
If you use a gun, it gets wear, everywhere. Don't worry about case colors getting worn off as you use your piece. It looks right. And I learned a long time ago to NOT handle the receiver with sweaty, dirty hands, or clean ones for that matter, when handling or carrying.
If it's a safe queen collectable, just keep it away from the sunlight, lightly oiled.
JR
Sorry, John. Couldn't disagree more.
Which part, Gary?
JR
I think it is Charles, actually. Or, Dr. Sane.
Many years ago, I was told right to my face by none other than Doug Turnbull that case colors can and will fade. It was not, in his opinion, from just sunlight, but the combination of sunlight and oxygen in the atmosphere that did it.
Best,
Ted
