ADVERTISING FLYER. EISENWER-WILLICH, HOERDE-DORTMUND. Gitter-Maste, Schmalbock-Maste, Kessel-Eisenkonstruktionen-Industrie-Bahnen, Masten-Tabellen umseiting. FR Wilh Ruhfus Dortmund. Appears to be for Railway Masts and Boiler Construction. Back has technical figures. 215mmx280mm. Single sheet, double sided. Came in as part of a collection that I bought over 30 years ago of 1920's railway manufacturer items.Slight wear to edges.