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CD 133.4
Insulator Facts

Dimensions:3 7⁄8" H × 2 3⁄4" W
Primary Embossing:The Primary Embossing is typically found on the front of the insulator and usually identifies either the manufacturer (such as "Hemingray") or the company that the insulator was made for (such as "AM.TEL.&TEL.CO.")

Insulators with No Name or No Embossing are denoted as such.
PATENT - DEC. 19, 1871
Years Produced: c.1871-c.1880s
Style Identifier:Hemingray often used style numbers, letters, words, or a combination to differentiate their insulator styles (such as: T.S., E2, № 1 Provo Type, Muncie Type, etc.) These are often, but not always, embossed on the insulator.
3
Rarity Scale 0. No specimens known
1. Extremely Common (millions known)
2. Very Common
3. Common
4. Fairly Common
5. Uncommon
6. Very Uncommon
7. Rare (dozens known)
8. Very Rare (less than a dozen known)
9. Extremely Rare (2 or 3 known)
10. Unique (only one known)
Fairly Common (4/10)
Usage: Telegraph
Hobby Nickname: Bullet
Value Range: This is an estimated value range only, based on historical hobby collecting data. Insulator values vary widely depending on many factors, including embossing, color, condition, mold variations, manufacturing anomalies, and other attributes. Please visit the Hemingray Values page for more information.
$15-7500
Insulator Overview

This early Hemingray piece is nicknamed the "bullet" by collectors. These come in either straight-sided or convex (bulging outward) crowns. The convex crown version is shown here. Versions with concave (inward-curved) crowns are considered to fall under CD 133.
Known Embossings (6)
Primary EmbossingThe Primary Embossing is typically found on the front of the insulator and usually identifies either the manufacturer (such as "Hemingray") or the company that the insulator was made for (such as "AM.TEL.&TEL.CO.")

Insulators with No Name or No Embossing are denoted as such.
EINThe Embossing Index Number (EIN) is a unique number assigned by the collecting hobby to each distinct embossing for an insulator design. It is normally shown in brackets, e.g. [050].
EmbossingMost common terms:
(F-Skirt): Front Skirt
(R-Skirt): Rear Skirt
/: New line of embossing
{}: Special note (not embossed on the insulator)
[#]: Represents a number

Other terms:
{MLOB}: Mold Line Over Base
(F-Crown): Front Crown
(R-Crown): Rear Crown
(F-Umbrella): Front Umbrella
(R-Umbrella): Rear Umbrella
BaseThe base is the bottom of the insulator. Hemingray made 4 different types of bases:

1. SDP: Sharp Drip Points
2. RDP: Round Drip Points
3. CB: Corrugated Base
4. SB: Smooth Base
Year AddedThis is the year that this embossing was officially recognized and added to the McDougald (1991-2008) or Briel (2011-2023) insulator price guides. It is not necessarily the year this embossing was discovered.
Photo
Status = In my collection

If the value in this column says WANTED, then that specific insulator is on my wanted list! If you have that insulator and would like to sell it, click on the WANTED link to submit photos and contact me.
PATENT - DEC. 19, 1871 [010] (F-Crown) PATENT/DEC.19.1871 (F-Skirt) [[Backwards 'B'], 'C', 'F' or 'H'] (R-Crown) 3 SB - Photo
PATENT - DEC. 19, 1871 [015] (F-Crown) PATENT/DEC.19.1871 (F-Skirt) ['H' or 'J'] (R-Crown) 3 {MLOB} SB - Photo
PATENT - DEC. 19, 1871 [020] (F-Crown) PATENT/DEC.19.1871 (R-Crown) 3 SB - No Photo-
PATENT - DEC. 19, 1871 [030] (F-Crown) PATENT/DEC.19.1871 (R-Crown) 3 (R-Skirt) ['A', 'B', [Backwards 'C'], 'D', [Backwards 'E'] or 'G'] SB - Photo
PATENT - DEC. 19, 1871 [040] (F-Crown) PATENT/DEC.19.1871 {Note 'E' is missing middle bar} (R-Crown) 3 (R-Skirt) ['A' or 'E'] SB - Photo
PATENT - DEC. 19, 1871 [050] (F-Crown) PATENT/DEC. 19. 1871 {Missing middle bar in 'E'} (R-Crown) 3 SB 2019 No PhotoWANTED
($40 Reward)
Removed Embossing

The following embossing(s) were removed from the price guide because they could not be verified to exist, were consolidated with other embossings, or were otherwise ambiguous/inaccurate. They are preserved here for historical purposes.


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Primary EmbossingThe Primary Embossing is typically found on the front of the insulator and usually identifies either the manufacturer (such as "Hemingray") or the company that the insulator was made for (such as "AM.TEL.&TEL.CO.")

Insulators with No Name or No Embossing are denoted as such.
EINThe Embossing Index Number (EIN) is a unique number assigned by the collecting hobby to each distinct embossing for an insulator design. It is normally shown in brackets, e.g. [050].
EmbossingMost common terms:
(F-Skirt): Front Skirt
(R-Skirt): Rear Skirt
/: New line of embossing
{}: Special note (not embossed on the insulator)
[#]: Represents a number

Other terms:
{MLOB}: Mold Line Over Base
(F-Crown): Front Crown
(R-Crown): Rear Crown
(F-Umbrella): Front Umbrella
(R-Umbrella): Rear Umbrella
BaseThe base is the bottom of the insulator. Hemingray made 4 different types of bases:

1. SDP: Sharp Drip Points
2. RDP: Round Drip Points
3. CB: Corrugated Base
4. SB: Smooth Base
Year Removed
n/a
Known Colors (30)
ColorThe color of the insulator.
Aqua
Blue
Blue Aqua
Celery Green
Cornflower Blue
Dark Aqua
Dark Blue Aqua
Dark Green
Dark Olive Amber
Dark Olive Green
Dark Teal Blue
Dark Yellow Green
Green
Green Aqua
Ice Aqua
Ice Green
Light Aqua
Light Blue
Light Green
Light Green Aqua
Light Purple
Light Sapphire Blue
Light Yellow Green
Milky Aqua
Olive Amber Blackglass
Purple
Sapphire Blue
Teal Aqua
Yellow Green w/ Dark Amber
Yellow Green w/ Light Amber