To take this to another level... Photograph EVERYTHING front and back, and take the photos in to multiple large dealers... They will want to see the coins in person, but would be able to give you some numbers based on the photos. Take the coins in to those that seem reasonable, in small batches... don't take all in to one and leave them.

Also google coin dealers, there are bunches of them out there... google the coins themselves... know what you have before you take them in.

Trust no one.

imo

T.