Vintage 1940's era FIRE-KING D handle Ivory Mugs

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A total of 6 Fire-King Ivory glass D handle mugs 40's era. (see photos below).
(5) pieces are embossed on the bottoms Fire-King oven ware, Transition shaving mugs with flat heat rings (1) is marked Fire King oven glass
The 1 odd mug is larger both in diameter and height also it is darker than the rest. it has a slight heat ring.
The 5 mugs measure approx. 3-1/2" tall x 3-3/8" in diameter, the odd one measures 3-5/8" tall x 3-1/2" in diameter
All are in very good condition, no chips, cracks, clean, bright and shiny. Some have the normal straw/mold marks.