Color photo-lithograph postcard of Frankfurt am Main's Hauptwache square, showing the historic 1730 guardhouse converted into the Café Hauptwache at center, surrounded by yellow electric trams on multiple tracks, Edwardian pedestrians crossing the cobbled square, and the grand Zeil boulevard stretching behind flanked by ornate Gründerzeit commercial buildings and department stores.

• Caption: "Frankfurt a. M. Café Hauptwache mit Blick in die Zeil."
• Publisher: Gerhard Blümlein & Co., Frankfurt A. M., No. 22/5
• Status: Unposted