Cover from Centro de Importação Automobilista (C.I.A.L.), Coimbra, Portugal, addressed to Atlas Manufacturing Co., Indianapolis, Indiana. Printed letterhead explicitly advertises parts for Chevrolet, Ford, Fiat and other makes. Single 3$50 Portuguese stamp with Coimbra cancel. Cover shows significant damage including torn upper edge and missing corner. The boldly printed automotive trade letterhead remains legible and visually striking despite condition issues.