I was wiping down my Grandfathers WW2 issue 1911 today(Ithica made) and I noticed 2 things on the holster. First, I live in a really humid climate, and its getting a green gunk where ever the brass hardware and leather come into contact. I know that this eventually eats the leather away as I had it happen w/ a nothing french surplus holster that I stretched out to fit my Hi Power clone. the other thing I noticed was that the date on the holster has the date of 1918 w/ the J.J.M. under it. I think that it says"Hoyt" over the date, but its pretty hard to read from the wear. Its also gotten a bit worn over the years, and I wondered if anyone could recommend a cleaner, or protectant that would help w/ the green gunk around the brass, and help heal the wear on the leather itself. I certainly don't want to damage it as I consider it an heirloom. I don't know if it's the holster he was issued during WW2 or if it came back w/ him from when they re-drafted him for Korea