Issued by Austria in 1977, this S4 denomination definitive features a finely engraved interior view of St. Stephen’s Cathedral (Stephansdom), Vienna—Austria’s most iconic Gothic landmark. The design showcases the cathedral’s soaring rib-vaulted nave, ornate altars, and the famous pulpit rendered in exquisite architectural detail. Engraved by R. Toth after artwork by O. Zeiller, the stamp is admired for its deep maroon intaglio printing, making it a highlight of Austrian architectural philately. A desirable piece for collectors of European cathedrals, Austrian definitives, and engraved issues.