Just picked up a couple Japanese straights in ridiculously good condition. Not sure about the age on one of them (Gyokuhai) most probably made post WW2). The other is a Takehama made before 1941. Both have celluloid scales. Word has it that rot is not at all common with Japanese scales. Let’s hope that’s an accurate statement. I am tempted to replace the one set (Takehama)but….they look so fine. Actually they both do. I’m storing these with 10-12 other razors. Should I worry?