Set 4 VTG History Of Aviation Thermal Plastic Mugs Spirit St Louis Apollo Space

This is a vintage collectible set of 4 History of Aviation thermal plastic mugs or coffee cups depicting The Wright Brothers, The Spirit of St. Louis, Project Apollo mission and The Space Shuttle. They are in good condition with no cracks or chips. Each cup has the history of the aviation photo on the reverse side of the cup. I think these were made in the 1990's as a souvenir.