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CD 302
Hemingray №75
  • 1 3/8" Pinhole Variant
    In addition to the standard 1" diameter pinhole, Hemingray also manufactured a special 1 3/8" pinhole for larger pins. Note the thicker neck to accommodate the wider pinhole. This variant appears in the [040] and [060] embossings.
Insulator Facts

Dimensions:4 3⁄4" H × 7" 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.1893-1920s
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.
Ohio, 75, 75 Muncie Type
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)
Hobby Nickname: Muncie
Series:Muncie Type
Voltage Rating: 40,000 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.
$30-150
Insulator Overview

This style is the №75. With a diameter of 7", this was the smaller of the two Muncie Types manufactured. This one was not used with a glass sleeve on the base. See also CD 303/310.

Related Links:
Known Embossings (5)
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 [020] (F-Skirt) HEMINGRAY/PATENT MAY 2ND 1893 (R-Skirt) MADE IN U.S.A./MUNCIE TYPE/№ 75 RDP - Photo
HEMINGRAY [030] (F-Skirt) HEMINGRAY/PATENT MAY 2ND 1893 (R-Skirt) MUNCIE TYPE RDP - No Photo
HEMINGRAY [040] (F-Skirt) HEMINGRAY/PATENT MAY 2ND 1893 (R-Skirt) MUNCIE {1 3/8" pinhole} RDP - Photo
HEMINGRAY [050] (F-Skirt) HEMINGRAY/PATENT MAY 2ND 1893 (R-Skirt) OHIO RDP - No Photo
HEMINGRAY [060] (F-Skirt) HEMINGRAY/PATENT MAY 2ND 1893 (R-Skirt) OHIO {1 3/8" pinhole} RDP - No PhotoWANTED
($100 Reward)
Removed Embossings (2)

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 n/a (F-Skirt) HEMINGRAY-75/PATENT MAY 2 1893 (R-Skirt) MUNCIE RDP 1995
HEMINGRAY [010] (F-Skirt) HEMINGRAY/PATENT MAY 2ND 1893 RDP 1999
Known Colors (3)
ColorThe color of the insulator.
Aqua
Blue Aqua
Hemingray Blue