Standard Porcelain Insulators
Photos - page 8
#51 - #62
Standard Porcelain Styles (Drawings)
Standard Porcelain Photos page: 1 2 3 4 5 6 7 8
Standard Porcelain #51
#51-01: N-N (G. P. Co.); #51-02: THOMAS; #51-03: MADE IN U. S. A. / T51; #51-04: OB
#51-02: THOMAS; #51-03: MADE IN U. S. A. / T51
Standard Porcelain #57
#57-01: PAT. NO. 108489.
Standard Porcelain #59
#59-02: PRIME; #59-01: P. P. INC
Standard Porcelain #61
#61-01: WP-23; #61-02: S. P. Co / No. 666; #61-03: P. P. INC.
Standard Porcelain #62
#62-01: P P INC; #62-02: CROSS COUNTRY; #62-03: N-N