RCA LC-1 Special?


Hello all,

I aquired some old speakers a little bit ago and recently discovered that they might be quite valuable.
The are RCA Type LC-1 Special, Extended Range, MI-11411-BX
I have done some research and am a little familiar with the LC1-a,b and c’s, but I can’t find anything on the BX.
I’ve taken lots of photos, but it looks like I can’t post them here.

Any ideas of what I’ve got here? thanks in advance!
128x128jaytron77
Some more info, that might be interesting. 
you'll see in the photos that under the magnet cover, you'll see what I'm assuming to be a crossover with a handwritten number. 

I think these must have come from a studio or church or some other of professional setting as there is a 70v transformer installed inside the box. 

They actually sound pretty nice. strong mid range, super warm sounding. I think they might need to be supplemented with a tweeter for modern music, or maybe change or adjust the crossover (if that is possible) but when I put on some John Coltrane, it all made sense, they sounded fantastic.  
Value 1500-2500 cabinet is worthless and adds no value  cool driver you would be hard pressed to find better sound for 1500-2500 plus they may increase in value I collect restore loudspeakers and have a soft spot for RCA MI kit so my values are close. I have a fairly large RCA collection most of what is considered the best stuff  FYI at this time collector markets are taking a hit. Values may drop in the near term.