3.5" from the early 1970s introduction of this product which was a small Twinkie covered in chocolate wrapped in silver foil. Twinkies made the news when parent company Hostess filed for bankruptcy on May 4 2012 but the brand was revived and returned to American store shelves nationwide July 15 2013. Button has two pinpoint shallow indents near the upper edge, probably as made, and overall NM displaying Mint. In our photo there may be some gray marks along the bottom edge but that was surface dirt now removed.