Approximately where are you located? Maybe someone can chime in with the name of someone who can inspect it for you!
If it was an original...rewiring has unfortunately devalued it slightly. If it is a reproduction, it is worth less.
There are many items that get listed on here that we cannot help with the estimated value because it requires a hands-on inspection to determine the difference in the two. The feel, weight, close up workmanship, integrity of the glass panels. Unfortunately these are things we are unable to do over the internet!