Hemingray Insulator Profile: CD 133  
This CD was offered under many style numbers over the years. It started out under the Dec. Pat. embossing as one of several No.3's, then under the H.G.Co. embossing it was changed to "No.7 Standard", later just "Standard" and finally No.20. To confuse things even more, this style was also referred to as "No.17" and "Regular" in 1910's catalogs, though no versions have been found embossed as such. 

Dimensions: 4" H x 2 3/4" W
Primary
Embossings:
• H.G.CO.
• HEMINGRAY
• NO EMBOSSING
• PATENT - DEC. 19, 1871
Years Produced:
c.1870s-1910s
Style Numbers:20, 3, 7 Standard, Standard
Rarity Scale (1-10): Common (3)
Trade Name: Regular
Mold Variations Collapse
December Patent Style
The December Patent style is the earliest of the Hemingray-produced CD 133s. Note the concave crown. Be sure not to confuse this version with the CD 133.4 which has a straight-sided or convex crown.
H.G.CO. No.7 Style
The earlier H.G.CO. CD 133s with the "No.7 Standard" embossings have taller, narrower crowns and sometimes squarish domes. [007], [010] and [020] embossings are found in this style.
H.G.CO. Standard Style
This later H.G.CO. style has a higher-up wire groove and a fat, rounded wire groove lip. Most of these are just embossed "Standard" on the rear skirt.
Known Embossings (21) Collapse
 
H.G.CO. [005] (F-Skirt) H G CO/PATENT MAY 2 1893 {Note no periods} (R-Skirt) STANDARD SDP Photo
H.G.CO. [007] (F-Skirt) H.G.CO. (R-Skirt) N 7/STANDARD {Note no 'º'} SB < WANTED! 
H.G.CO. [010] (F-Skirt) H.G.CO. (R-Skirt) Nº7/STANDARD {Note no line under 'º'} SB Photo
H.G.CO. [020] (F-Skirt) H.G.CO. (R-Skirt) Nº7/STANDARD {Note 'S' is backwards} SB Photo
H.G.CO. [030] (F-Skirt) H.G.CO. (R-Skirt) STANDARD SB Photo
H.G.CO. [040] (F-Skirt) H.G.CO./PATENT MAY 2 1893 (R-Skirt) Nº 20 SDP
H.G.CO. [050] (F-Skirt) H.G.CO./PATENT MAY 2 1893 (R-Skirt) Nº20/['STANDARD' blotted out] SDP Photo
H.G.CO. [060] (F-Skirt) H.G.CO./PATENT MAY 2 1893 (R-Skirt) STANDARD SB < WANTED! 
H.G.CO. [070] (F-Skirt) H.G.CO./PATENT MAY 2 1893 (R-Skirt) STANDARD SDP Photo
H.G.CO. [080] (F-Skirt) H.G.CO./PATENT MAY 2 1893 {'9' is engraved over an '8'} (R-Skirt) STANDARD SDP Photo
H.G.CO. [090] (F-Skirt) H.G.CO./PATENT MAY 2 1893 {Note 'A' in 'MAY' is missing bar} (R-Skirt) STANDARD SDP Photo
HEMINGRAY [010] (F-Skirt) HEMINGRAY (R-Skirt) PATENT/MAY 2 1893 SDP
HEMINGRAY [015] (F-Skirt) HEMINGRAY/Nº20 (R-Skirt) PATENT MAY 2 1893 RDP Photo
HEMINGRAY [020] (F-Skirt) HEMINGRAY/Nº20 (R-Skirt) PATENT MAY 2 1893 SDP Photo
HEMINGRAY [030] (F-Skirt) HEMINGRAY/PATENT MAY 2 1893 (R-Skirt) STANDARD SDP Photo
NO EMBOSSING [020] [No embossing] SDP Photo
NO EMBOSSING [025] [No embossing] {DEC. 19, 1871 Patent style} SB < WANTED! 
NEW! NO EMBOSSING [026] [No embossing] {DEC 19, 1871 Patent style} {Small diameter pinhole} SB < WANTED! 
PATENT - DEC. 19, 1871 [010] (F-Crown) PATENT/DEC.19.1871 SB < WANTED! 
PATENT - DEC. 19, 1871 [020] (F-Crown) PATENT/DEC.19.1871 (R-Crown) 3 SB Photo
NEW! PATENT - DEC. 19, 1871 [030] (F-Crown) PATENT/DEC. 19-1871 {Note the hyphen between '19' and '1871'} (R-Crown) 3 SB < WANTED! 

The following embossings were removed from the price guide because they could not be verified to exist:

Unverified Embossings
Year Removed





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