Rare vintage 1980s HP Hewlett-Packard Personal Computers Image-Changing Coffee Mug. Featuring a graphic of a desktop HP Personal Computer with a caterpillar on the keyboard. This is one of those mugs that changes images when hot water is put into it, in this case, from a solid computer screen to a screen with a butterfly on it (in the 1980s, HP had a tv commercial where a caterpillar turned into a butterfly). Photos 1, 3, and 5 show the mug after hot water has been put in it; photos 4 & 6 show what it looks with no hot liquid in it). The mug is in excellent vintage condition, with no chips or cracks. There is light crazing and there are some scratches on the computer screen. Part of the rim also looks slightly darker than the rest of the mug (last two photos). Marked on the bottom "Made in England". The mug is just under 4" high and measures approx 3.25" diameter.

This item is sold from a vintage boutique in Long Beach, California.