What year was the h and r model 732 s and w l serial?

The H&R Model 732, which is a .32 caliber revolver, was produced by Harrington & Richardson from 1972 until the early 1990s. The serial number you mentioned, "S&W L," suggests it might be related to Smith & Wesson, but H&R revolvers typically have their own serial numbering system. To determine the specific year of manufacture for an H&R Model 732, you would need to consult an H&R serial number reference guide or contact a firearms expert.