Long time lurker, recent forum member and now Mosrite owner as of this morning. Thought I would share some photos of my Brass Rail with you. I got this from a guy in Arkansas, I think he's been trying to sell it for a while at various prices and he agreed a sale with me, pulled out, we renegotiated and I ended up getting it. Total price including shipping and customs duty in the UK was under half what the last one sold for on EBay and I bought it to play and play lots so all is well.
I spoke to Adam Expat about this when it first popped up. He pointed out some weird aspects to it and I've photographed them in detail as they're pretty intriguing. Anyway, here goes...(the pics should link to Flickr if you want to see them bigger)

Case by Sumlin, on Flickr

Mosrite Brass Rail by Sumlin, on Flickr
You can see the first anomaly in these pics - the pickguard/guards. I've seen them with one huge tortoiseshell guard, I've seen them with controls mounted to the body, I've seen them with brass guards but never this arrangement or this wiring arrangement. You can see from the pic that the lower guard fits round the bridge nicely but doesn't quite snuggle up to the upper guard right so there's a little gap.

Mosrite Brass Rail by Sumlin, on Flickr
It's routed back and front as well

Back Route by Sumlin, on Flickr
The back route looks original, if only because it's reasonably neat and it was done before the guitar was finished. I noticed that the circular cover plate only fits it's screw holes in one position too which is pretty funny...

Routing by Sumlin, on Flickr
The front route has something of the Stevie Wonder Routing Company about it. It was done after the guitar was finished as you can see and it is wild! I took the plate off to date the pots but the pots have so much oxidisation-type powdery funk on them that I can't date them. Next plan is to have it all cleaned up so I should be able to date them then. Something tells me they're not going to be from 1976...

Rear Of Pickguard by Sumlin, on Flickr
The top scratchplate has "43" underneath it in Sharpie and some of the paint finish has stuck to it and so I'm inclined to think it's original to the guitar (which is number 43). I wonder if it started life with just the one pickguard and some kind of crazy wiring system that eventually made it's owner go a bit The Shining and attack it with a router and convert it to a more simple set up? The weird thing is the pickguards look like they're from identical material: thickness, colour etc. Could it have been a factory modification for someone? Or was it made and routed for custom wiring, never finished and then finished years down the line with a more simple wiring option? You tell me...
Under the pickguard we've got this:

Construction by Sumlin, on Flickr
Which looks consistent to me with other Brass Rails though it's weird the little central block has been sprayed too. I haven't taken the pickups out yet to check construction but it looks like a set neck from the outside (or some sort of combo of set and screwed). There is a hefty ding out of the playing side of the neck join:

Neck Join by Sumlin, on Flickr
It's been touched up with a Sharpie. It doesn't look like a stress crack or damage to the join but more like something has happened with a tool maybe. It doesn't extend past the side either and the rest of the neck joint looks and feels solid.

43 by Sumlin, on Flickr
Number 43. It has a lot of 'peeling' of whatever it is that covers the top of the brass rail but the neck itself is in lovely shape. I don't think it's been played for a while as the frets have some tarnishing so that's the first job for me. What surprised me is the girth of the neck - it's a beast! Even with old strings and dirty frets it plays sweetly though.

The New Mosrite by Sumlin, on Flickr
Headstock - on the pics the seller sent me it looked like it had a plastic nut installed but nope, it's a brass one.

Pickups by Sumlin, on Flickr
Pickups and bridge - bridge is pretty high and leaning forward a bit but it plays great.
So there we go...
Any thoughts/revelations welcome. Unless they're "I had this guitar stolen!" of course....
Chris