A local laminate countertop shop went TU and sold everything. I picked up sixteen routers, including six of these Stanley H39As. They'd modified them by removing the handles to enable them to be used one-handed more easily.
The owner had been using some of them for thirty years and said they are the longest-lived small router ever built. Does anyone know the start/end of production? A couple I got are new enough to have a grey powdercoated finish instead of the polished aluminum, but basically same machine.
A couple of those I got have cracked domes and missing the spindle lock. They still whizz fine, just awkward to change bits. A search didn't turn up any parts sources. Those on the internet advertising parts for Stanley routers mostly were for the newer models.
jack vines
PS - in doing some research, the more recent acronym is "the R2D2 router" - supposedly the original Star Wars robot was modeled after one of these.