The picture shows two views of this U.S. Air Force 90th SPG Ceramic or Porcelain Advertising Coffee Cup. The mug is not dated and the year that it was made is unknown. The mug pictures two United States Air Force insignias or emblems with eagles. It is marked on the two sides and bottom as follows:
90th SPG F. E. WARREN AFB
SECURITY POLICE DEPARTMENT OF THE AIR FORCE UNITED STATES OF AMERICA
CHINA
The mug measures 3-7/8'' tall. It appears to be in mint unused condition as pictured.