The model 60 ny1 was a replacement for the model 36’s as authorized off duty weapons for officers hired after jan88 or so.
They went along with the model 64 ny1’s that were also double action only. They both replaced the traditional da model 10’s and 36’s. The 60’s were a surprise move as a shiny revolvers was first believed to be tactically unsound and secondly you were taught that cops have blued/black guns.

I never saw a 3” model 36 in use by an Nypd female mos but they were issued 3” model 10’s with hb rb used by quite a few