At the beginning of the year, I got a Revere gumball optical from a thrift store. It didn't come with a head so I stuck in on my Landmark NEMA for the time being. However that fixture was complete so I've been thinking about getting another NEMA head for the gumball. I'd imagine finding a OEM head would be hard but I'm thinking of getting a 100w S54 Cooper RMA head for it since they're the cheapest on eBay but I was wondering if there are any other NEMA head only options on eBay. Thanks in advance.