You are purchasing a nice vintage circa 1968 Minnesota Twins thermal coffee mug.  This is a very cool vintage item.  I believe this was a stadium giveaway item at Met Stadium.  Mug measure about 4 inches tall.  Is made of plastic.  Has nice older Twins Paul & Minnie logo over a baseball on one side.  Has Glenwood Inglewood Water logo on opposite side (sponsor of the giveaway).  Paper insert is blue and is bright and vivid.  Mug shows little of any surface wear.  Mug still has original plastic wrapper, removed from plastic for pictures.  Overall, grades NMMT!  Very cool vintage Twins item!  Buyer pays $5.00 shipping.  MN residents please add 6.875% sales tax.  Shipping combined whenever possible.  Thanks for your business!  Please check out my ebay store for more great items!