I'm not going to swear in court or anything, but the 925 R8 are 925 of course is silver, the R is the brand the 8 is Tiffany. I will go check to verify, like I said I may be wrong. It just sounds so familiar.
lol! Same questions asked 4 times in a row! According to the internet, it says that's the years, which in this case, R8 means 1945. But, It doesn't look that old so I don't know if I'd believe that.