Thermo-Serv Norman Rockwell Saturday Evening Post collectors coffee cup set of 4

Thermo-Serv Norman Rockwell Saturday Evening Post collectors coffee cup set of 4 Retro vintage insulated plastic coffee cup set from 1989, Thermo-Serv, Made in USA Brand: Thermo-Serv Condition: Fair vintage condition. Expected staining with use. One cup is cracked on the inside (see last picture) but I wanted to keep the set together for collectors. Each measures approximately 4 inches tall by 3 3/16 inch wide (4 1/4 at handle)