I have a major need to custom build some of these pickups. As of yet I have only seen working pickups so I have not been able to throughly examined them. The big problem is that this pickup is constructed in such a fashion that there is a good change I will brake the coil and need to rewind it if I open it up.
At long last I finally have all I need to start reproducing these pickups!! Here is a link Mosrite Rework you will see where I have made a vintage correct replacement pickup for a modern Mosrite pickup.