15cm quick firing navy gun, 40 calibres, on wheeled carriage
Contribution :
http://www.warmuseums.nl/gal/148gal.htmBulgariaTravel.org
Artillery blog link
Lieu :
Bulgaria
Varna
Maritime Museum
The reason why this rare WW1 heavy German gun is exposed in Bulgaria is unknown.
The Maritime Museum owns two other WW1 surviving heavy guns.