On the 80th Division Veterans Association ,https://www.80thdivision.com/photos/Hazelgrove/Hazelgrove.html several very interesting photographs can be found on the subject of the 38cm Howitzer..
This Howitzer is of 38 cm caliber and was manufactured in Pilsen, Austria in 1917. It was captured September 26 by the 319th Infantry 80th Division. In destroying the gun before leaving the recoil was unfastened and a charge exploded which threw the base cap weighing 2 tons over 300 yards and the breach block through a 2 foot stone wall. The gun is to go to West Point, U.S.A. The gun had a compass bearing (magnetic) S 31° E and was used to fire on Verdun.
It looks to me that this is the same 38cm howitzer model as in the Vienna museum, see https://landships.activeboard.com/t65998947/kuk-38cm-vienna/
photo/s copied from https://www.80thdivision.com/photos/Hazelgrove/Hazelgrove.html
Additional photograph, found on https://archive.org/details/33rddivisionacro00harr/page/n3/mode/2up
-- Edited by Haverba on Tuesday 28th of January 2020 04:27:50 PM
I think your identification is accurate. Michal Prasil in his book on the "Skoda Heavy Guns" says there were 7 of these howitzers in the field
at the start of 1918 and this increased to 10 by the end of the war.
Did you notice the two sets of trunnions in the carriage - this was so the carriage could be used for the 38cm Morser (rear pair of trunnions ) or the 24cm gun
