You probably already know this but NYPD started having issues with the 60's which led to it being dropped as one of the approved guns back then.

Officers that purchased one were required to take it to the PD's range personnel for re-inspection and function test. Those that passed were stamped with a small silhouette symbol near the NY-1 marking on the frame.

But some problems continued and eventually Smith & Wesson agreed to buy/ voucher back the ones sold to officers and the unsold ones were returned to the factory for re-configuration, inspection, and re-sale to the public.

Anyway it sounds like range personnel were very accommodating so congratulations on your LEOSA qualification.