This is an oval baking dishing from Lenox Holiday (Dimension) line. It does not appear to have been used but I do not have the original box or tag. The baker measure 16.5 inches from handle to handle outside and 9 x 14 inner measurement. There are no utensil markings on this baker. 

I purchased a large quantity of Lenox china and bake ware several years ago at an estate sale. Most of the pieces appeared to have been unused as this is. Please let me know if you would like to see additional photos. 

Thank you for looking.