These three are from the Trumbull Electric Mfg. Co. They are marked on the back Complements of the Trumbull Electric Mfg. Co. Plaineville, Conn. I have photos of Square D Co. ashtrays and give aways posted in earlier pictures. Just type in my name in the search section and it should show you all pictures I have posted in the past and current. I hope you enjoied these photos. Happy collecting. Take care stay safe and be well to all.