I had no idea safariland ever made a comp 1 for 41 mags until today when I was digging through the used holster bin at the local gun store and came up with a brand new looking safariland dual speedloader pouch. Looked inside and it had a pair of speedloaders with it and on the bottom was a little "41".
My heart jumped and I RAN to the register, $20 later and the whole set came home with me, and to my utter surprise, they work!
I don't know how old they are, but the rim locking cog is brass.