Some may advertise Fire King logos as being rare. Here is a quick way to date your piece:
1942 - 45 FIRE-KING in block letters
1942 - 45 OVEN FIRE-KING GLASS
mid 1940's OVEN FIRE-KING WARE
mid to late 1950's OVEN Fire-King WARE MADE IN U.S.A. ("Fire-King" is written in script lettering)
1951-1960 ANCHOR HOCKING OVEN Fire-King WARE MADE IN U.S.A. ("Fire-King" is written in script lettering)
1960 - late 1960's ANCHOR HOCKING OVEN Fire-King DINNERWARE MADE IN U.S.A. ("Fire-King" is written in script lettering)
late 1960's- early 1970's ANCHOR HOCKING OVEN Fire-King OVEN-PROOF MADE IN U.S.A. ("Fire-King" is written in script lettering)
mid - late 1970's ANCHOR HOCKING OVEN Fire-King Suburbia OVEN-PROOF MADE IN U.S.A. ("Fire-King" is written in script lettering)
Markings on the bottom with dashes, bumps, and numbers are mold marks and batch numbers. They neither add nor detract from the value.
Buying Fire King Jeannette Jadite Jadeite | eBay