This week's mug is a retail mug which I found many years ago. It shows a blackboard surrounded by pencils, the alphabet and a ruler. On the blackboard is the math equation 2 + 2 = 4.
When hot liquid is added, the blackboard clears to reveal words which turn the equation into a phrase. "2 Teach is 2 touch lives 4 Ever!"
The color change is about average, but it's a beautiful mug in great condition.
DESIGN: 1 Sided
THERMOCHROMIC: 1 Color
TYPE: Retail
The color change is about average, but it's a beautiful mug in great condition.
DESIGN: 1 Sided
THERMOCHROMIC: 1 Color
TYPE: Retail
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