This group has some unusual and colored designs of fence insulators and nail knobs. The first is the wierdist nail knob I have. It is a no tie design marked Pat. 11-29-10. Rick Soller had a bunch of these and was lucky he sold me one. The next piece is marked P.P.Inc./U.S.A./No.20., Lt. Blue color, Third piece is marked WP 9. It is the only porcelain no tie fence design I have found made by Wisconsin Porcelain Co. The next piece is marked U.S.A. These U.S.A. spools were made by Wisconsin Porcelain Co. but for what distributer I don't know. This one was glazed in brown. They are usually white. The piece after that is an unusual multi groove spool marked P.P. Inc. U.S.A., Last is a No Name spool but has a flat side. I asume was to fit flat up against a fence post but could have been a fluke. Who knows. Very neat though.