Vintage Corning Microwave Plus Pyrex 4-cup blue stripe measuring cup. In excellent vintage condition - no chips, no cracks, no warping of the plastic lid, etched text/lines on the glass bowl has slight fading from normal use. This is a rare and original vintage item that was loved and cared for. Comes with the original blue lid with embossed text: For Microwave and Refrigerator Use Corning Microwave Plus M320 Cover Corning NY USA Dishwasher Top Shelf Only Not for Range Top or Broiler The glass measuring cup text says: Pyrex M-320 Corning NY USA For Microwave Use Not For Stovetop Always packed with care and shipped fast. May be bundled with other items in my closet for discounts and combined shipping; please only bundle with non-breakable items.