If you can't find, it do mere mortals have a hope? The info on the token says English-speaking country with decimal currency. That means US and Canada are the top candidates. Since you drew a blank, what are Canada's chances? In favour: the ¢, the words "branch" and "of" (same elements plead for US). Presume that the first R means Royal and Canada becomes likely. Against: S. of A., if you assume the S stands for States, but what if it stands for Students? Also, no C in sight (no U either).
There is a French organisation called RNMA and it has an office in Canada. I mention it only for completeness, as I don't think it would have grown at least 109 little RNMA's in Canada. The token is professionally struck and I don't think it is contemporary. Aluminium probably means 20th century and not for a vending machine. Not a transport or telephone token, as it would have been catalogued already if it were. So what would a nickel buy in the past? I have seen the denomination used for chewing gum. I could imagine it buying a cup of coffee or tea in a staff restaurant in the interbellum period. Students come to mind once again.
Peter