7.65 Mauser Dummy ID

The headstamp on this M 1889 round is RA 17 7.65 its a tinned case dummy with 4 small holes near the base and a holed primer it appears to be filled with saw dust, I think this is a WW1 Remington round made for Belgium OR is it a Raufoss made round, I would like to put it in it’s correct draw , thanks Randy

I just found a thread for this round on, “search” ,however no concrete proof that it is Remington , or is there ? anything new? thanks Randy