Vintage Soviet Twin-Tone Pneumatic Air Horn, Probably S40-B – IX 1965, Military Storage Provenance

Description

Vintage Soviet Twin-Tone Pneumatic Air Horn – 1965

Vintage Soviet twin-tone pneumatic air horn with two metal trumpets of different lengths, a substantial mounting bracket and a common pneumatic chamber.

Its construction and proportions are consistent with Soviet S40-series pneumatic horns, most likely the earlier S40-B type or a closely related variant.

The rear housing carries the stamped marking IX 65, most likely indicating September 1965.

Twin Trumpets and Two-Tone Signal

The horn uses two trumpets of different lengths to produce two different tones when supplied with compressed air.

• Long trumpet: approximately 43 cm / 16.93 in
• Short trumpet: approximately 36 cm / 14.17 in
• Bell diameter: approximately 11 cm / 4.33 in each
• Combined width across the bells: approximately 22 cm / 8.66 in
• Total weight: approximately 900 g / 1.98 lb

The difference in trumpet length allows the unit to create the characteristic powerful twin-tone warning signal associated with heavy vehicles and machinery using pneumatic systems.

IX 65 Date Mark

A clearly stamped IX 65 marking is preserved on the rear housing.

The Roman numeral IX is interpreted as the ninth month, while 65 most likely refers to 1965, giving a probable production date of September 1965.

The original stamped marking remains clearly visible and forms an important part of the historical character of the object.

Military Storage Provenance

According to supplied provenance information, the horn was acquired from a military storage facility.

The trumpets and mounting bracket retain at least two historic layers of green paint. A lighter green coating is visible beneath a later darker green repaint.

Large areas of natural wear expose the underlying yellow metal of the trumpets, creating a distinctive surface with genuine age-related patina.

The historic paint has deliberately not been removed or restored.

Historic Green Paint Layers

One of the most visually interesting features is the surviving layered paint.

The lighter green coating is reported as the original finish, while the darker green layer appears to represent a later repaint during the object’s service life.

Scratches, worn edges, exposed metal and paint losses have been preserved rather than refinished, retaining the object’s authentic industrial appearance.

Soviet S40-Series Pneumatic Horn

The construction is consistent with the Soviet S40 family of twin-tone pneumatic warning horns.

These units were designed for vehicles and machinery equipped with compressed-air systems and typically combined two differently tuned trumpets with a common pneumatic mechanism.

Because no clearly readable factory stamp identifying the exact model as “S40-B” has been found, the identification as S40-B remains probable rather than definitive.

Historical Context – Soviet Heavy Vehicles and the Warsaw Pact Era

The S40-B and related S40-series pneumatic horns are associated with Soviet heavy vehicles and specialist machinery equipped with compressed-air systems.

Technical documentation connects S40-series signals with vehicle families such as Ural, ZIL and KrAZ. These trucks and specialist vehicles became familiar equipment throughout the Soviet Union and the wider Warsaw Pact during the Cold War.

This historical context helps explain the type of vehicle on which a horn of this construction could have served. It does not prove that this particular example was fitted to any specific Ural, ZIL or KrAZ vehicle. Its original machine has not yet been identified.

For a deeper investigation into the IX 65 marking, the possible S40-B identification, Warsaw Pact military service, repainting and the object’s eventual survival in military storage, read our
Soviet Pneumatic Air Horn from 1965: A Warsaw Pact-Era Military Mystery.

Construction

The assembly consists of two metal trumpet horns, a cast pneumatic chamber and a substantial metal mounting bracket.

At the rear, two separate air passages are visible for the two trumpet sections.

The robust construction is characteristic of equipment intended for heavy-duty vehicle and industrial service.

Condition

The horn is preserved in authentic vintage condition with substantial evidence of age and service use.

• Extensive natural wear to the painted surfaces
• At least two surviving historic green paint layers
• Exposed yellow metal on the trumpets
• Scratches, marks and natural patina
• Surface oxidation on mounting and mechanical components
• Clearly preserved IX 65 stamped marking

The object has not been cosmetically restored and its historic surface has been intentionally preserved.

The pneumatic horn has not been tested for functionality.

Please examine all photographs carefully, as they form an important part of the condition description.

Measurements and Details

• Object: twin-tone pneumatic vehicle air horn
• Origin: Soviet Union / USSR
• Probable model: S40-B / S40 series
• Marking: IX 65
• Probable date: September 1965
• Long trumpet: approx. 43 cm / 16.93 in
• Short trumpet: approx. 36 cm / 14.17 in
• Bell diameter: approx. 11 cm / 4.33 in each
• Combined width across bells: approx. 22 cm / 8.66 in
• Weight: approx. 900 g / 1.98 lb
• Operation: compressed air / pneumatic
• Finish: historic layered green paint with natural wear
• Provenance according to supplied information: acquired from a military storage facility
• Functionality: untested

The Story Behind This Object

More than sixty years after the IX 65 marking was stamped into its housing, this horn survives as more than a vintage vehicle component.

Its layered military-green paint, substantial pneumatic construction, visible service wear and reported military-storage provenance open a wider story about Soviet engineering, Warsaw Pact vehicle fleets and the everyday sounds of Cold War military service.

Its exact journey remains unknown. It may once have served on a heavy truck or specialist vehicle, later been removed during repair or decommissioning, and ultimately survived for decades in military storage.

➡️ Read the full historical investigation of this 1965 Soviet pneumatic horn

Collector Interest

This object will be of particular interest to collectors of Soviet military equipment, Cold War memorabilia, historic trucks, Ural, KrAZ and ZIL vehicles, industrial antiques and vintage automotive components.

Its strongest collectible features include the preserved IX 65 marking, unusually large twin metal trumpets, layered historic green paint, substantial pneumatic construction and reported military-storage provenance.

It can also serve as a striking historical display object or, if its exact application is eventually confirmed, potentially as a period component for the restoration of a Soviet heavy or military vehicle.

More stories about military objects, equipment and the people who encountered them can be found in
Military Memories.