This gun is in the Army Museum Zizkov in Prague. It has been claimed it is an Austro-Hungarian 15cm Haubitze M.99/4 but it isn't one of those.
I don't recognise it but it does seem to have recoil and recuperator cylinders which would place it around 1900 or so. Anyone know?
Regards,
Charlie
Thank you - that's the one.
So it's an experimental Skoda 12cm howitzer from 1899.