This is a vintage Anchor Hocking Fire-King glass mug in a bright yellow color with a brown base and cream interior. Fire-King was a popular line of heat-resistant glassware made in the USA, primarily in the mid-20th century. The embossed mark on the bottom confirms its authenticity as an Anchor Hocking Fire-King piece.

The mug features a sturdy handle and a glossy finish typical of Fire-King glassware. The yellow color is vibrant and consistent, with a brown base adding a distinctive two-tone look.

Condition is good overall with minor surface wear and small marks consistent with vintage use. There are no visible chips, cracks, or repairs, preserving its collectible value.

This mug was designed for everyday use but has become a sought-after collectible for vintage kitchenware enthusiasts. It can be used for serving hot beverages or displayed as part of a Fire-King or retro glassware collection.