They were made by the Gorbutt Bowman pottery company that was located in Kansas. My guess is they were made in the 1950's but not sure of that.
They measure about 3 1/4 tall. They are in GREAT shape--no chips, cracks or damage of any type. One is marked "KANSAS" lightly on the bottom. They are the salt and pepper ones that match--one has three holes in the top and the other one has four holes. The item "Vintage RARE Gorbutt Bowman pottery KU Kansas Jayhawks salt pepper shakers NICE" is in sale since Wednesday, October 25, 2017. This item is in the category "Sports Mem, Cards & Fan Shop\Fan Apparel & Souvenirs\College-NCAA". The seller is "jacs1988" and is located in Topeka, Kansas. 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, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Russian federation, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia.