I have a sewing machine model number ad592563 and would like to know what the value of it is.

Since there is a VERY limited market for valuable sewing machines AND because few people even know what or where the model number is... your best bet is to look on EBay for similar if not identical models by picture to see if there is even ANY interest in your machine.

Check out antiques.lovetoknow.com.

They have an entire section of their website devoted to identifying valuable old Singer machines.