Van Gogh's Disappearing Ear Mug

Here's a clever use of thermochromatic ink (the kind of ink that changes color with heat): pour hot coffee into this mug, and watch Van Gogh's ear disappear!

From the NeatoShop: Disappearing Van Gogh's Ear Mug | More "disappearing" mugs

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Alex - I don't think anything wore off. Has been sitting on a book shelf for some years. It's by Lion Mktg Atlanta Ga 1988. Could swear it used to change the picture. Maybe my senility is worse than I thought.
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Alex - Does that ink lose it's properties after a while? I've had a coffee cup for ages for the U.S. submarine service. One side has the dolphins insignia. The other side has a periscope view of a Japanese tin can. I know it used to change but after filling it with boiling water nothing has happened. I have no idea where I got the thing since I've never been a member of that elite fraternity. I was going to offer it to anyone that earned their dolphins but since it doesn't work it's not as neat as it used to be.

(then again anything related to the Silent Service is pretty darn neat to my mind.)
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Hm - I'm sorry that you've had a bad experience with Unemployed Philosopher's Guild. They're actually a pretty good company.

I think the Cheshire Cat was one of the first mugs made by UPG. We haven't heard any problem with the Van Gogh or newer mugs made with thermochromatic ink.

If you had bought it from us (we actually don't have the Cheshire Cat mug), we'd be more than happy to issue a refund/exchange.

Please contact them for a refund or exchange:

Fax: 718 254-9345
Phone: 718 243-9492

The Unemployed Philosophers Guild
105 Atlantic Ave. #1
Brooklyn NY 11201
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You are correct in that you aren't supposed to wash them in a dushwasher, but I didn't wash it in a dishwasher - I washed it by hand

I had the Alice in Wonderland mug made by the same company, and you can see from the Amazon reviews that the majority of buyers had the same problem - regardless of whether they washed it in a machine or by hand

(As yet, there are no reviews of the Van Gogh mug)
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