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CD 100
Surge
Insulator Facts

Dimensions:2 3⁄4" H × 2 1⁄4" 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.
 SURGE
Years Produced: c.1940s-1950s
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)
 Common (3/10)
Usage: Electric Fence
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.
 $1-20
Insulator Overview

This cute little guy is an electric fence insulator produced by Hemingray for the Babson Bros. Co.'s Surge brand of farm equipment. It has a 1/2" pinhole, which was designed specifically to fit on Surge pins and fence posts. See also the less common CD 100.2.

Related Links:
Known Embossings (4)
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.
SURGE [010] (F-Skirt) SURGE / REG.US.PAT.OFF. (R-Skirt) BABSON BROS.CO. / CHICAGO U.S.A. RDP - Photo✓
SURGE [020] (F-Skirt) SURGE / T.M.REQ.PAT.PEND {Note spelling} (R-Skirt) BABSON BROS.CO. / CHCIAGO U.S.A. {Note spelling} RDP - Photo✓
SURGE [030] (F-Skirt) SURGE / T.M.REQ.PAT.PEND {Note spelling} (R-Skirt) BABSON BROS.CO. / CHICAGO U.S.A. RDP - Photo✓
NEW! SURGE [050] (F-Skirt) SURGE / REG. U.S. PAT. OFF. / ['T.M. REQ. PAT. PEND' blotted out] (R-Skirt) BABSON BROS. CO. / CHICAGO U.S.A. RDP 2023 No 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
SURGE [040] (F-Skirt) SURGE / T.M.REQ.PAT.PEND / [Blotted out embossing] {Note spelling} (R-Skirt) BABSON BROS.CO. / CHCIAGO U.S.A. {Note spelling} RDP 2015
Known Colors (2)
ColorThe color of the insulator.
Clear
Light Straw