These 30 stamps are rarely seen in multiples (especially 30 of them). These are mint never hinged.
Polish II Corps in Italy Stamps, 1946 - 1947
Commemorative postage stamps for the Polish Corps in Italy were issued during 1946 and 1947. Though considered "Cinderella" or "poster" stamps by some philatelists, these stamps were valid for postage on letters sent from members of the Polish II Corps stationed in Italy.
The Polish II Corps, commanded by Lieutenant General Władysław Anders, was created in 1943, as a major tactical and operational force of the Polish Army in the West. During the Italian Campaign of 1944-1945, they became an independent component of the British Eighth Army, and they fought with distinction in the Battles of Monte Cassino (1944), Ancona (1944), and Bologna (1945). By the end of 1945, the Polish II Corps had grown to over 100,000 soldiers.
In 1946, the corps was transferred from Italy to the United Kingdom, where it was eventually demobilized. The majority of the soldiers of the Polish II Corps remained in exile and settled in the United Kingdom.
One must remember that the Polish II Corps in Italy were the armed forces of the Polish Second Republic Government-in-Exile, located in the United Kingdom. The government-in-exile did not recognize the Communist state that was established by the USSR at the end of World War II, and they continued to exist until the fall of Communism and the establishment of the Polish Third Republic in 1989.