Quote Originally Posted by David I Evans View Post
so we withdraw the 51mm as no one can see a use for the type, promptly buy a 60mm on UOR as we suddenly discover a use for it and promptly retire the 60mm post Herrick as it doesn't fit some staff planner's clever thinking.

Welcome to the world of joined up thinking
Joined up and pop-centric thinking notwithstanding, “shelved” does not necessarily mean retired and scheduled for disposal. It can and probably does mean the 60mm has been transferred to reserve for issue dependent upon circumstances and physical environment.