Very nice M19 you have there 79S. K-frames are my favorite too. I am sure you will enjoy it.
I have 2 .357 K frames. They are my favorite revolvers to just go to the range and shoot. 6gr of Unique and a 158gr lead SWC is very enjoyable to shoot.
M66 purchased new in 73 if I remember right. Has had a couple of make overs. 😁

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M19-3 from 1970 was a gift from a friend.

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