Scarce WW1 era Postcard of Airship / Zeppelin

Most images of airships, especially Zeppelins tend to be artist impressions. This is a real photograph of one seen cruising above the rooftops. The card is printed in English, so this is possibly a Zeppelin. Postally unused. Stain to reverse. Strange lines run across the image, possibly from when it was developed. Still a scarce image.

Code: 54495