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The stamp, a rich red lilac, showcases the intricate design by Arthur Schuricht (E) and Signe Hammarsten-Jansson and is a testament to the craftsmanship of the Bank of Finland Security Printing House.

A piece of postal history, the stamp and ungraded, captured the essence of its era with no certification. Issued on December 15, 1942, and expiring on December 31, 1962, it represents a unique intersection of design and postal services, making it a coveted item for collectors and enthusiasts of Finnish architecture.

Olavinlinna Fortress, also known as Olofsborg (Swedish) or Olafs Castle, is located on a small rocky islet in Lake Saimaa in Savonlinna, Finland. At the time the castle was built, Finland was a part of Sweden, along with Denmark and Norway. Sweden had been engaged in battle against Novgorod (Russia) for some 30 years, when finally, a peace treaty was signed. The Peace of Phkinsaari (aka Treaty of Nteborg), signed in 1323, ended the war and regulated the border. The border wasn't fixed, however, and border disputes were common. By the 15th century, the Grand Duchy of Moscow had become increasingly more powerful and more of a threat to the Swedish Crown.

Wyborg was the only Swedish border castle at the time, and it was decided that another one was necessary. Risto Heikki Ryti(Finnish pronunciation:[ristoheikiryti]; 3 February 1889 25 October 1956) was aFinnishpolitician who served asfifth president of Finland from 1940 to 1944.

Ryti started his career as a politician in the field ofeconomicsand as a political background figure during the interwar period. He made a wide range of international contacts in the world ofbankingand within the framework of the League of Nations. Ryti served asprime ministerduring theWinter Warand theInterim Peace and as president during the Continuation War.