Vintage set of 4 1976 Thermo Serv insulated tumbers. Map atlas design 6.5" high

This is a vintage set of 4 Thermo Serv insulated plastic tumblers. Design is a vintage map of the Caribbean including pictures of a sea monster, dragon and ship. Trimmed in that great vintage chocolate brown color. No cracks or any issues to call out. 6.5" high.