Value of early Ohio Rapid Fire 1919a4?

This is one of Todd's very early builds. I bought it with the thoughts that my boys could play with this with one of Emory's cranks...it didn't take because they liked shooting my F/A guns more...and they're grown now anyway. It hasn't had more than a couple hundred rounds thru it and that's been many years ago. I'm tired of stepping around it in my basement.

What's it worth...gun only, no mount?