Well Brian...at $275 you get a nice movement, decent dial, Gen style case and bezel assembly that quite honestly, does a better job as a 5513 base for modding than the MBW.......know why?..........because the MBW has a channel under the bezel for a gasket and the Gen 5513 does not.....that's why.
A little case work to smooth the edges and a decent insert is all you need. I recall that the lugs accept Gen bars and the crown/tube is pretty close.
Too bad for anyone who hesitated......a great deal to say the least.