Looks like a bike that well taken care of - put in garage at night, not left out in rain, only driven on flat paved surfaces and not tipped over much, etc... The seat, in lowest position, as pictured, is 19 inches high.
The front wheel is 16 diameter. 9.5 diameter rear wheels.The item "Vintage AMF JUNIOR Children's Tricycle Very Good Condition USA made" is in sale since Sunday, December 8, 2019. This item is in the category "Toys & Hobbies\Outdoor Toys & Structures\Ride-Ons & Tricycles\Pre-1970". The seller is "mncountryroads" and is located in Gibbon, Minnesota. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Uruguay, Russian federation.