Vintage Minigraph Computer Graphics Wiz Tech Advertising Pinback Button Pin

I recently acquired a collection of vintage pinbacks from an estate. Most of the pinbacks date from the 1970s and 1980s and there are about 30 relating to computer tech and artificial intelligence so check out my other items if that type of advertising interests you. Measures 3" in diameter. Great condition with no stains, wear, or oxidation.

T1