Perfection was a branding used by Martin Stove & Range Co. Although there are Martin catalogs showing quite a full line of pieces as being Perfection, the piece you have there seems to be about the only one that ever turns up marked just Perfection. I have one of the same, and note it is shallower and a bit smaller than other #8 regular skillets, causing me to wonder if it was not produced as an economy piece. The RB also only shows this one piece so-marked, and dates it to 1910. Pieces shown dated later are marked Martin Perfection or Martin's Perfection, and they appear to be part of the regular line.