Here's one of my most treasured Smiths, Mod. 41 #96XX mfgd. about December 1958...bought on U.S. home leave in the Washington suburbs in December 1970. Been around the world with me while assigned to the American Embassy in Korea.
Three years later, I got lucky when a USAF officer left country before his S&W accessory special order came to the PX. I bought the pictured weight set and two extra magazines for the delivered price he would have paid, $26 total. Those were the days.
I understand the 5" field barrel, acquired much later, is not common. It is set up to shoot "as is", with a button filling the comp screw hole, with the pictured aluminum blank piece in place, or with the comp from the 7" bbl.
The small blue box is the one the weights came in. This and the mags were shipped to the Osan AFB PX in the outer box.
For anybody even toying with the idea of buying a quality .22 target pistol, this, in my humble opinion, is the ONLY one to get. I have many guns and some of the best match pistols, but the 41 leaves them all in the dust.
They can at times be particular about ammo, so I have experimented and custom wound, on a lathe, about a half dozen recoil springs to handle any possible recoil impulse. A 41 can make even poor quality ammo shoot well. I like the Federal target ammo, and will have to try the CCI rounds which so many here prefer.