@marqmike I wouldn't worry about the serial number honestly. There are a few other distinguishing characteristics of the SE's that can be seen in the photos: the mounting hardware, the bevel behind the baffle, the veneer and finish.
I am writing a blog post the SE's so I had already posed the question of exact number to Rob. Seems as though Lana's personal email doesn't work anymore. I don't know if she's still there in KY.
Don't be surprised if there isn't a COA either. I didn't get one. The company was in such a state of flux at the time the last pairs were built, a lot of things slipped through the cracks.