Thanks guys. I've gained considerable knowledge from the people on this forum in this past....a much appreciated asset for a beginning accumulator / collector.
I purchased the 11,XXX range Model 41, which is about 98% overall, but came with a later S&W magazine with a black plastic follower. I had a spare steel follower magazine which I'll use with it. I've never personally seen a "staked" back Model 41 magazine and assume they may be hard to fine.