Luminous with gaslight glow and wet-cobblestone shimmer, this exquisite watercolor postcard by Czech artist Jaroslav Šetelík places the viewer at the threshold of Prague's Municipal House (Obecní dům) — the consummate Art Nouveau statement completed in 1912 — just as a gleaming open-topped automobile of the period idles beneath the ornate rotunda lanterns, their bronze figural supports catching the evening light. Behind it rises the medieval Powder Tower, that Gothic sentinel of the old town, creating the electrifying collision of eras that defines Prague's unique urban character. Printed for the Czech market with bilingual captions in Czech and French, this unused card was published by MK (Melantrich or associated Czech publisher) and carries the distinctive four-leaf-clover house mark; the postage note reads "Není-li sdělení, stačí 20 hal. známka" — if no message, a 20-heller stamp suffices — dating it to the early Czechoslovak Republic period.