The ware for Dec 2019 is an async mux module from a PDP-11, more specifically, a DVZ11 quad asynchronous multiplexer (M7957). I found this board while rummaging among my childhood possessions looking for unrelated gear…I seem to recall picking it out of a trash pile at a local university back in the day. I had no idea what it was back then, it just looked cool. Congrats to dwu for naming it right away, email me for your prize!