Looking more closely at the picture I posted: Isn't it interesting that in 1965,
Grounding was an option? Probably cost a lot more for that extra, asbestos-covered, wire, too! And what exactly is an Iris Shutter? Yes, kiddies, there WAS a time when an ERS could come with shutters, iris, or pattern slot, but only one at a time! The 1365 did not support templates, one had to open the fixture and paper clip them into the gate. Makes one take extra care to get the proper orientation the first time!
Good times, fond memories. Love the 750/T14 lamp--medium bipost, and very susceptible to becoming "pregnant". Should have used a truss condom. Boy, is my mind is in the gutter today!