Can anyone give a rough estimate of value for Leitz Wetzlar Binospo 6x24 binoculars? I think market value is in the $80-100 range, but can't find others to compare, other than military later models. Leica tells me they were delivered in 1924; they are not military; are in the original case, mechanically and optically no issues, other than a bit tight; a bit of scuffing on the leather and black paint. It impresses me to find something like this that's nearly a century old, yet is still usable. Many thanks in advance for any help!