Unfortunately, this post is (so far) worthless without images.
Periodically I will hear people mention having slightly unusual classic 4 inch SB M&P's.
During the late 1920's into the 1930's, S&W used to make up a special 4 inch .38 Special SB M&P for sale to recruits at NYPD. This was eventually termed (by S&W) the New York Police Target Model.
Basically a specially sighted M&P with a special front sight width, 3.25-3.5 pound trigger and grooved backstrap and checkered or grooved trigger.
I was on the phone with S&W today asking about some invoices from many years ago and had to go digging through some uncataloged files of mine. I found many references to the New York Police Target Model and scanned perhaps a score of them into a single .pdf file if anyone wants to read it.
It's not linked on the website, just dropped on the server:
https://www.vivasandson.com/NYPDTargetModel.pdf
The first mention of New York Police Target Model by name is on the document from 29APR31 (documents are in chrono order).
Interesting reading.
Best,
NYPD Target Model
Linear Mode
