May be a 28-cm L/14 tube or a 30,5 cm tube on this old trailer?
I have no certitude...
Hi Guy François.
About your last image I think is a 28cm Krupp L12 barrel trailer. I think match with this other image.
Although it cannot be seen very well in the photo, above the breech it appears to have 3 holes to coincide with the upper brake and recovery cylinders of the 28cm Krupp L12 howitzer
The L14 had two cylinders above and two below for these mechanisms. In adittion the 30.5cm Beta Gerat 09 Haubitze L17 i.R
also have 2 cylinders above and two below for these mechanisms, so I think only remains the option of a 28cm L12....
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