Diameter : 317mm
Height : 76mm
Weight : 9kilo
Filling : 5,4kilo
Fuze : T.Mi.Z.35

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Photos below © Edwin Elderhorst

The early mine shown below is how they were normally issued.
Typical Wehrmacht green/grey paint.
The marking on top says " F.W. 157 1937 ".
I don't know which manufacterer is meant by this code.

Photos below © Gilles.

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