Griswold Oval Roaster???

Seems to be some question if this roaster was in fact made by Griswold. I have located one exactly like the one listed on eBay. See attached link.
Was hoping that perhaps someone that has encountered one can shed some light on this piece???
https://www.ebay.com/itm/273648015143

There is no conclusive evidence as to it being Griswold or Wagner. Pricing seen over the years has been all over the map. Enough of them have shown up to not make them $300 or $600 rare, but not enough to have revealed any definitive clues as to maker.

Thanks Doug. As usual I appreciate your expert advice. We were in Quartzsite yesterday and picked up a few pieces along with the piece I made reference to. I'm thinking it will make an excellent pot for feeding around 30 people or so. May post pics later when we complete our usual cleaning cycle.
Forgot to add that the one we bought looks a 1000 times better than the ones I saw on eBay