Your .32 rimfire Canuck ammo was made by IVI/Dominion Industries and should bear a "D" headstamp. The exterior of the case walls should have spiralling rows of impressed dots on them to ease extraction. Their last run may have been in the mid to late sixties- .32 RF ammo was still listed in the '67 S.I.R. mail order catalogue...marlinman93 said:That's a tough one. For a number of years, the .32 rimfire was somewhat scarce, but then it simply dried up. A couple years ago I found a stash of 15 boxes of .32 rimfire made by Cannuck. I bought it all for $13 a box. Since then, I haven't seen any shootable .32 RF, and the collectable stuff goes $50-$65 a box.
I shoot mostly .32Colt CF in my 1891, 1892, and ballrd chambered for this cartridge. Occasionally I shoot a few rimfires, but rarely.