6×30 Dienstglas marked ddx.

Nice “early” aluminium constructed 6×30 Dienstglas in good used condition. The Dienstglas is complete with the bakelite rain protector. The Dienstglas is nicely marked with the serial number 231734 and with the code ddx. which indicates production by Voigtlaender u. Sohn AG, Braunschweig. Nice 6X30 Dienstglas in good used condition!