Vintage 1989 shops Star Trek Disappearing Transporter coffee mug—Kirk, McCoy, Spock

Product Name: Vintage 1989 shops Star Trek Disappearing Transporter coffee mug—Kirk, McCoy, Spock
Vintage 1989 Star Trek disappearing transporter coffee mug, very good vintage condition. No chips or cracks. May have a few surface scratches/marks, and there is slight coffee staining on the interior bottom, but not bad. Please review all photos for the shops clearest description. This mug has everyone's favorite characters from the original Star Trek series—Kirk, McCoy, and Spock. What makes it particularly cool is that when you add boiling water (or coffee or tea), the characters fade away and look like they are being beamed up/transported from the transporter room! Add ice water (after the cup has cooled a little) to return them to the transporter room, or let it occur naturally as the cup gradually cools to room temperature. In 30+ years, the material that changes color with temperature doesn't work quite as well as when brand new, but still effective and super fun! Approximately 3.5” tall and 3” in diameter. I'm happy to answer any questions. Bundles and offers welcome! H241.