Mark, my pan is like yours but not quite so pronounced. Griswold would engrave thier markings in the pattern but Favorite may have attached the smiley logo to the pattern. It is cast with the pan. My cover is marked 9B. (with the dot after the B). I think Favorite only marked their covers with the size number and not No. number.
Jeff, Griswold's deep skillets prior to the block TM pans (ERIE through EPU) were flared out just like this Favorite one and Griswold skillet covers will not fit unless by accident where a larger size might fit a smaller skillet (I haven't checked). That was before there were any Griswold skillet covers. My assumption is that Griswold narrowed up the tops of the deep skillets so that a regular skillet cover would fit both regular and extra deep skillets. I used to use a smiley marked Favorite skillet cover on my Griswold deep skillet- fit perfectly. Can't remember the sizes of each though.
Ed, could it be that since the top of the Favorite deep skillet is wider than their No.8 regular skillet that they sized it at 8-1/2 instead of 8?. It's strange that what look to be two identical covers would be marked both 8-1/2 and the other one 9. I think the sizes we have are all the same but the marked number is different.
Steve