Hi Alex, I believe that the ones that I have in my collection which also includes RhMP collars, could also be prototypes. I have not seen any of these in any other collection nor in any publication. My anodised collars all came from one source in the early 1980s when I first started collecting. So possibly the RAR badge in question is one as well. I will attempt to attach a collection of post 1970 OR badges which iclude the anodised ones mentioned.
Dave
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