Langenthal Swiss porcelain jam jar made for Hero the Swiss jam, jelly and preserves company, probably in the 1980's by the Porzellanfabrik Langenthal AG, Langenthal, Switzerland.

This charming, useful and attractive jam jar stands about 4 1/4 inches (11 cm) tall without the lid on, is about 4 inches (10 cm) across the top and is a bright, glossy white with a gold ring just below the top edge, a gold ring around the top lid and a bright gold knob on the top. In addition to the Porzellanfabrik factory mark on the underside the jar has, on the underside, the Hero logo in its usual blue color and distinctive lettering.

The jar is in perfect new, never used condition - as though it was just made.