I have several modern pieces I aquired recently that have markings I can't identify yet. These came from a seller up in Canada but I have found limited info on them. The spools have a marking of CSS Brazil 1996 (Ceramica Santa Terezinha) started in 1960 and PTS with a bolt inside a diamond. This company is PTS (Product-Technology-Service) a distributer from Canada that was started in 1979. The markings that are confusing is the CP in a triangle/1984 and the SS superimposed over a multi part insulator with Brazil 1995. I asked Barrett Nicpon if he could provide any info but he didn't have any luck either. They are neat markings. Any info would be greatly appreciated.