Daisy 853C - I sold one last summer to a Neighbour GrandPa who had bought it for his Grandson, who was in Canada Army Cadet program. The boy was really wondering how it was possible that I had one here - his "commander" says, now-a-days, they are not "sold as surplus" - they are turned in for crushing - about the only legit way, that they have, to get rid of them, any more. It was not always done that way. On CGN, I had bought a bunch of parts - GrandPa was a former CREME - he pronounces that as "ree-mee" - he does not pronounce the "C" - during his time in that role, his job in Canadian Forces became named as "Weapons Tech".
So far as I know the "C" suffix refers to "Canadian" - the Cadet program here wants a magazine, whereas the same guns in USA - Cadets, Boy Scouts, etc. - want single shot guns.