It's also interesting to note that the 68 degree tilt of the tulip has become something of a trademark for United. They have incorporated it into the tabs on the website. United coffee mugs are larger at the rim than at the base - the sides of the mug flare out at a 68 degree angle. The ends of the crossbar of the "T" in UNITED. The trademark angle is used in other items which escape my memory at this time.