I'd have to stick mine on my back window, when I get a new car. They probably are like those circular things you find Masons and Eastern Stars using. I have one for AKA, however, I didn't place it on the car, but on the back window instead. When the car was wrecked, I easily removed it. It's inside my back window for sentimental reasons.
These decals look better on the car, but....
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