A really deep cobalt blue glass over the lamp. Really love that deep blue color! Absolutely gorgeous! Mechanical siren. 1960s light. No idea who made it though.
Not yours Jace. Do you have one? I found the red PARs at a Flea Market near me. Didn't have money at the time I saw them, when I got some money they were gone. Oh, well! Mebbe another time I will get one. Not too worried about that.
UPDATE: This is FedSig Model WLRG.