My Grandfather recently passed and in his house he has a pair of "The Suzerain Electro-Voice". Can anyone tell me what they might be worth and if this is the right area to post something like this. Thanks.

Don't know that particular E-V model, but here's a good place to browse E-V literature of the likely era:

http://www.hifilit.com/hifilit/Electro-Voice/Electro-Voice.htm

E-V made some excellent drivers and also enclosures in the good ol' days.