This vintage wholesale spark plug box was manufactured by Robert Bosch GmbH in Stuttgart, Germany. The packaging is designed for the MA145T1 model spark plug, which features an 18mm thread. The exterior of the box is finished in bright yellow with red borders and features a central graphic of a spark plug over a blue starburst, accompanied by the Bosch armature trademark. Printed text on the top and sides identifies the manufacturer and origin as Stuttgart, Germany, with the French phrase IMPORTÉ D'ALLEMAGNE indicating it was intended for an export market. Technical specifications printed on the side include the part number MA145T1, 18 mm, 22.5 mm, and 0.8 mm. The interior of the box contains an original pink paper inspection slip marked Verpackt durch Kontroll- and stamped P065M 12 N in purple ink. The box contains an assortment of individually boxed spark plugs.