As I understand it, the no 211 is the naval version of the no 208, which itself was a modification of the no 207. I have not found any reference to it's use. My question is which gun would this have been used with? Would it have been the 3.7", 4.5" or 5.25" AA guns for instance? Also, did the 3.7" AA gun ever enter naval service?
Thanks in advance.
Thanks in advance.