imperial casing id request

[RED LION]

got this nice casing well marked on botom
MÄRZ 1918 FN in circle 12 hl 27
height of casing 129 mm diameter on top 75 mm weight 730 gramms
the casing is not cut on top i have 3 of them but no documentation of
gun or amunition of this . thanks for all info about casing anf gun .

[RED LION]

p

[klarkon]

7,5 cm Gebirgskanone Modell 1915 "Škoda"
https://en.wikipedia.org/wiki/Skoda_75_mm_Model_15
FN = Fritz Neumeyer AG .

[klarkon]

[RED LION]

Thanks for info 👍