Oh great .... Derek read the post ... now it's tainted ... how will I ever be able to answer the question now ?
I hope you're happy Derek !!!!!!!
Actually it has been mounted in various locations during the life of the Sherman. On the early Shermans it was mounted on the commanders cupola. In later versions it was moved to between the 2 hatches so the .50 could be used from either hatch location.
Happy Modelling and God Bless
Robert