Cast iron firebacks produced by the Stern foundry are iconic pieces, often sought after for their craftsmanship and decorative value. Stern firebacks from the 1950s and later are often decorated with artistic reliefs, sometimes signed by renowned designers or artists (such as L. Martinez or Jacques Sergeff). The motifs vary: rural scenes, mythological figures, or geometric patterns. Some firebacks, numbered or signed, are considered collector's items, testifying to the know-how of the Stern foundry and French industrial history.