Hi All. Having read snippets here and there about what to use on celluloid, certain plastics, hard rubber, gold trim, etc., I began to wonder-is there any recognized "one stop shopping guide" for what to and not to use when cleaning/polishing all the different materials encountered when restoring pens? I then further wondered-what is the best source for identifying the material a certain pen is made of?

Inquiring minds want to know.....