Vintage World's Fair Expo 1974 Washington State Pavilion Bent Glass Square Souvenir Ashtray. 

It measures 2¼" squared and has a red and white graphic of the Washington State Pavilion. The 1974 World's Fair was officially known as the International Exposition on the Environment. It was held in Spokane, Washington in 1974 and was the first environmentally themed World's Fair.

Vintage used condition it does have a few flea bites along the edges but no cracks or large chips.