Picked up this skillet at a local thrift shop, To me it appears to be the top part of a combo cooker, No visible marks that I can see to identify it but the handle looks like Vollrath to me, It just went in my lye tank so I will be able to tell more in a few days if there are any marks hidden under the crud.
Over all width is 10 1/4", distance across outside of raised lip is 9 7/8" and inside width is 9 5/8" so I am guessing it is for a No 8 skillet or kettle or what ever it was meant to fit.