Rare Magic Chef Stove Used by 96 year of grandmother

I have seen a photo of the same stove on another website..worthpoint.com or this link: http://www.worthpoint.com/worthopedia/antique-magic-chef-gas-stove-oven-117059064. Or search " Rare Antique Magic Chef Gas Stove" on the Worthpoint website.  I would like to see how much the stove is worth as we would like to sell it.    The picture I took was before I cleaned it.  The stove works.  Not sure about the oven. It has been a while since the oven was used but just a few months the stove was used and it worked fine.