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CD 281
№71 High Voltage
Insulator Facts

Dimensions:3 3⁄4" H × 4 5⁄8" 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.
HEMINGRAY
Years Produced: c.1893-1930s
Style Identifiers: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.
1 High Voltage, 2 High Voltage, 71 High Voltage, 71
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: Power (Primary Distribution)
Series:High Voltage
Voltage Rating: 15,000 Volts
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.
$10-3500
Insulator Overview

This high voltage style is identical to the CD 183 in every respect except that this style has three petticoats instead of two, and therefore has a higher voltage rating. This insulator style also has the distinction of going through the most style numbers: №2 High Voltage, then renumbered to №1 High Voltage, then renumbered to №71 High Voltage, and finally renumbered to just 71 by the time the style was discontinued in the late 1920s/early 1930s in favor of the double petticoat version, CD 183.

Related Links:
Known Embossings (11)
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.
HEMINGRAY [010] (F-Skirt) HEMINGRAY - 71 (R-Skirt) MADE IN U.S.A. RDP - Photo
HEMINGRAY [020] (F-Skirt) HEMINGRAY - 71 (R-Skirt) MADE IN U.S.A. SDP - Photo
HEMINGRAY [030] (F-Skirt) HEMINGRAY - 71/[#] (R-Skirt) MADE IN U.S.A. RDP - Photo
HEMINGRAY [040] (F-Skirt) HEMINGRAY/№ 1 HIGH VOLTAGE (R-Skirt) PATENT MAY 2 1893 SDP - No Photo-
HEMINGRAY [050] (F-Skirt) HEMINGRAY/№ 1 HIGH VOLTAGE (R-Skirt) PATENTED MAY 2 1893 SDP - Photo
HEMINGRAY [060] (F-Skirt) HEMINGRAY/№ 1 HIGH VOLTAGE/[Blot out under '1'] (R-Skirt) PATENT MAY 2 1893 SDP - No Photo-
HEMINGRAY [070] (F-Skirt) HEMINGRAY/№ 2 HIGH VOLTAGE (R-Skirt) PATENT MAY 2 1893 SDP - Photo
HEMINGRAY [080] (F-Skirt) HEMINGRAY/№ 71 HIGH VOLTAGE (R-Skirt) PATENT MAY 2 1893/MADE IN U.S.A. RDP - No Photo-
HEMINGRAY [090] (F-Skirt) HEMINGRAY/№ 71 HIGH VOLTAGE (R-Skirt) PATENTED MAY 2 1893/MADE IN U.S.A. SDP - No Photo-
HEMINGRAY [100] (F-Skirt) HEMINGRAY/№ 71 HIGH VOLTAGE/[Blot out under '71'] (R-Skirt) PATENT MAY 2 1893/MADE IN U.S.A. SDP - Photo
HEMINGRAY [110] (F-Skirt) HEMINGRAY/№ 71 HIGH VOLTAGE/[Blot out under '71'] (R-Skirt) PATENTED MAY 2 1893/MADE IN U.S.A. SDP - Photo
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.

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
HEMINGRAY [120] (F-Skirt) HEMINGRAY / PATENT MAY 2 1893 (R-Skirt) HIGH VOLTAGE / TRIPLE PETTICOAT / №1
Note: This embossing was most likely mistaken for a CD 281, but was in fact a CD 280.
SDP 1999
Known Colors (11)
ColorThe color of the insulator.
Aqua
Blue
Blue Aqua
Carnival
Dark Aqua
Green
Green Aqua
Hemingray Blue
Ice Blue
Light Aqua
Root Beer Amber