Austria’s 1908 Jubilee Issue celebrated the 60th year of Emperor Franz Joseph I’s reign, and this 25-heller blue stamp is among the most admired designs of the series. It features a finely engraved profile of the aging monarch, executed with characteristic precision by F. Schirnböck, after artwork by Koloman Moser, a leading figure of the Vienna Secession. The bold Art Nouveau lettering and floral corner motifs make this issue a standout of early 20th-century Austrian philately. Printed in high-quality recess engraving, it remains a key value for collectors assembling the complete 1908 commemorative set.