Great Lynch box call! As you probably have already noticed, it has a couple of valves (similar to tire air valves) next to the screw and spring. Most boxes of this stlye, no longer have these. I guess, most were taken out an lost. This call is post Homewood Alabama style, but retains the Homewood style sound chamber (note the dual cuts at both front and back center of body). A fine additon to any Lynch collection.
Bill
Thanks for the info. Bill! Any idea as to the year it was made? I'm guessing it was before the "tukey in the pines" call. The only thing I've found that was even close to a description like this call was on a priceguide at
http://www.wildturkeyzone.com/turkeycalls/PriceGuide/priceguidel.htm, and it listed that one at $1900! Mine is flat-sided, from Birmingham, and has four holes in the lid. Do you think this is the same one?
One interesting note about your call is that one side is mahogany and the other side is walnut . M.L. 's final design for the World Champion is all mahogany for the body . Nice old call , take it out hunting but be careful they are easy to squash if you sit down wrong !
You know, I thought the sides looked like different types of wood! Me not being experts like most of you in the wood ID field, I wasn't sure. I don't think I can take this one out in the woods, although I would like to. It definitely would be cool to take a gobbler in the same woods as my great-grandfather, with the same call! It's just too pristine for me to risk messing it up, IMO. I mean, there's hardly a scratch on it; it looks better than most of my calls,

. There's another Birmingham one and some MS ones up at the hunting camp (AKA, my g-grandfather's old home), so maybe I'll try with one of those.
Thanks for sharing, love seeing pictures of early Lynch calls, and it is especially great when they get passed down for generations. I am sure you know better than to try to clean it up, just put it in a safe place. 
The only cleaning I did (after I took the pictures) was wipe off a couple mud spots with a dampened paper towel. I also wiped-off the little white specks of chalk from the side that you can see in the pictures and some of the blue chalk on the paddle with a dry towel (I think my dad or grandfather added the blue chalk, at some point).
There is also some writing on the inside of the box. And as Bill implied, those "dual cuts at both front and back center of body" run all the way down the bottom inside of the sound chamber. I guess that's where he got the idea for the raised sides. I'll try to make time to take some pictures of the inside and post them tonight.
Thanks,
Gaines