Original Item: Only One Available. This is a lovely example of a WWII Japanese Type 4 Ceramic Grenade, painted for use as a souvenir/memento from United States Fleet Activities Sasebo. U.S. Fleet Activities Sasebo is a United States Navy base, in Sasebo, Japan, on the island of Kyūshū. It provides facilities for the logistic support of forward-deployed units and visiting operating forces of the United States Pacific Fleet and designated tenant activities.

Sasebo has been a naval base since 1883, when Lieutenant Commander Tōgō Heihachirō nominated the small fishing village to form the nucleus of a base for the Imperial Japanese Navy. In 1905, ships of the Japanese Navy under Admiral Togo sailed from Sasebo to combat the Russian Baltic Fleet, leading to victory for Togo at the Battle of Tsushima.

The Imperial Japanese Navy had approximately 60,000 people working in the dock yard and associated naval stations at the peak of World War II, outfitting ships, submarines and aircraft. Sasebo was a popular liberty port for navy personnel.

In September 1945, the U.S. Marine Corps' Fifth Division landed at Sasebo, and in June 1946, U.S. Fleet Activities Sasebo was established.

This is an excellent inert demilitarized genuine Japanese Type 4 Ceramic Hand Grenade. This example is offered in excellent condition in the harder to find white body. On the white body is a beautifully painted logo of the Fleet Activities station of Sasebo and is retained perfectly.

The Type 4 Grenade or Ceramic Grenade was a “last-ditch” hand grenade developed by the Imperial Japanese Navy in the closing stages of World War II.

By late 1944 and early 1945, much of the industrial infrastructure of Japan had been destroyed by Allied strategic bombing, and there was a growing shortage of raw materials due to Allied naval blockades and submarine warfare. Lacking in metals to mass-produce hand grenades in the vast quantities that would be needed against the projected Allied invasion of Japan, the Imperial Japanese Navy Technical Bureau developed a design for a cheap, easy-to-make grenade made of ceramic or porcelain materials. Kilns famous for the production of traditional Japanese pottery, such as Arita, Bizen and Seto were pressed into service to manufacture these relatively crude weapons. There were a tremendous number of variants on shape, size and color, because the design depended on each kiln.

The Type 4 grenade had a fragmentation body made of terracotta or porcelain materials. The grenade was round-shaped with a bottle neck with a rubber cover and a simple fuse. This detonator was no more than a blasting cap crimped on to a five-second length of fuse. The other end of the fuse, which was outside the rubber plug, was covered with a match-head composition. A slip-on rubber cap covered the whole neck, and fuse. A small, loose wooden block with an abrasive composition on one side was contained in the rubber fuse cover.

The Type 4 grenades were passed out in large quantities to civil defense organizations, such as the Volunteer Fighting Corps, Yokusan Sonendan, and to reservist organizations involved in preparations against the possible invasion of the Japanese home islands by Allied forces. They were also supplied to front line combat troops in large quantities, and are known to have been employed at the Battle of Iwo Jima and Battle of Okinawa.

This is a wonderful example and comes more than ready for further research and display.