[size=12]I'm tempted to chime in with an unequivocal "yup," but caution makes me dial that down to a confident "Probably, yup."
I don't have a specimen, though. Although I do own several hinge-tab skillets, the only hinge-tab lid that I have been able to lay hands on is the size 8, and only because it came as part of the hinge tab chicken pan. But, here's the thin evidence that makes me lean yup-ward:
1) The hinge-tab 7 (p/n 2507) skillet definitely exists. There's a listing for it in the blue book, there's a p/n for it in the appendix,, and I've got one in my collection, albeit a lidless one.
2) There is a blue book listing for the hinge-tab size 7 lid, even though there isn't a listing for it in the p/n appendix. In the 5th edition blue book, it's listed and priced on pg 47, along with the 3, 5, 6, 8, and 9. Now, that's not a sure sign of existence, since the preceding page, pg 46, lists a couple of sizes of high dome fully lettered skillet that I don't think Griswold actually produced, but it's a good indicator.
3) Provided that 1) is true, why would Griswold have made a hinge tab skillet if they didn't also make a hinge-tab cover to fit it?
I have a copy of the 1940s reprint catalogue that is usually dated to right around 1942 or so, and it only lists (non-hammered) hinge tab skillets in sizes 5 and 8, with an additional size 8 chicken pan. I think they scaled back a little, perhaps as a war measure. I've never seen the 1940 circa catalogue that's floating around out there, but I'm guessing that it would have listed all of the available sizes, and I'm guessing that the 7 would have been one of them, both cover and skillet.
So (with confidence) Probably, yup. [/size]
