Printed on back: Pioneers In The Flight Against Infectious Disease. Coins issued as part of an ad campaign for the drug Isolone (erythromycin estolate). Excellent uncirculated condition. No papers.
Printed on back: Pioneers In The Flight Against Infectious Disease. Coins issued as part of an ad campaign for the drug Isolone (erythromycin estolate). Excellent uncirculated condition. No papers.