Kind of a collection of S&W conundrums,
A Model 547 which is basicly a .38 M&P in 9mm , Then its polar opposite a Model 52 which is basicly a target version of the 9mm Model 39 chambered in .38 wadcutter,

The oddest of the bunch is the 53 which is basically a factory Wildcat pushing .22 cal bullets from a .357 case with an optional ..22lr rimfire replacement cylinder or bore inserts.

Neat guns but not mainstream S&W handguns as much as oddballs for nonconformists.