Antique Dry Sink

I currently own this large antique dry sink that my 90 year old grandmother has passed down to me. 

The whole piece of furniture is on wheels, all functional. The dry sink contains 7 functional drawers of various sizes, 6 cabinet doors, and a pull-out table top. It is in great condition! The only flaw is one of the main cabinet doors is currently stuck, but I believe it could be easily fixed. I would like to know as much about it as possible as I am in college now and could use the money. My father thinks it is worth around $3,000. Any information is useful!