The so-called “Market Book” of Grein contains an entry in 1490 which secured the citizens’ rights and liberties granted by Emperor Friederich II. The miniature on the Austrian stamp is by Ulrich Schreier (fl. ca. 1460-1490), an Austrian illuminator and bookbinder, who illuminated the Market Book at the end of his life. The stamp was issued in 1990 to commemorate the 500th anniversary of the appointment of Linz as the provincial capital of the “Land around the Enns.”