Issued in 1986 by East Germany (DDR), this attractive architectural pair highlights historic water supply structures in Berlin. The 35 Pfennig stamp depicts the Wasserturm Berlin-Altglienicke (1906), a prominent brick water tower symbolizing early 20th-century municipal engineering. The 10 Pfennig stamp features a finely detailed Handschwengelpumpe Berlin um 1900, an ornamental hand-operated street water pump. Printed in clean line engraving style, this set appeals to collectors of industrial heritage, Berlin landmarks, and urban infrastructure themes. A desirable addition for DDR topical collections focusing on architecture and public utilities.