Vintage Mirro Copper-Tone Anodized Aluminum Fish Jelly Mold
Hollowware / Kitchenware (Food Mold) · Mirro Aluminum Goods Manufacturing Co., Manitowoc, Wisconsin. Founded in 1909, Mirro became the leading producer of aluminum cookware in the mid-20th century, known for durability and mid-market accessibility.
Pattern: Curved Fish (Salmon/Carp) motif with scales and tail fin. This specific configuration is part of a large line of decorative kitchen molds produced in the 1950s and 60s.
Type
Hollowware / Kitchenware (Food Mold)
Maker
Mirro Aluminum Goods Manufacturing Co., Manitowoc, Wisconsin. Founded in 1909, Mirro became the leading producer of aluminum cookware in the mid-20th century, known for durability and mid-market accessibility.
Material
Anodized Aluminum. This is not genuine silver or copper; it is lightweight aluminum treated with an electrochemical process to create a 'copper-tone' finish that does not tarnish.
Dimensions
Standard mold size holding 5.5 cups (approx. 1.3 liters). Typically measures 10-12 inches in length and weighs approximately 150-250 grams due to the lightweight nature of aluminum.
Description
A classic specimen of American mid-century kitcheniana, this curved fish mold captures the whimsical culinary trends of the atomic age. While designed for functional jelly casting, its lustrous copper-toned finish made it a staple wall decoration in suburban kitchens. The detailed embossing of the scales and tail provide both structural rigidity to the aluminum and a pleasing aesthetic when hanging.
Key Features
5.5 cup capacity indication; copper-tone anodization; fish scale texture; lightweight aluminum construction; circular interior flange.
Material & Composition
Anodized Aluminum. This is not genuine silver or copper; it is lightweight aluminum treated with an electrochemical process to create a 'copper-tone' finish that does not tarnish.
Finish & Decoration
Anodized 'Copper-glow' finish with a decorative embossed texture. Features high-relief scales, a segmented body, and a fanned tail. The finish is designed to mimic the warmth of traditional culinary copper.
Hallmarks & Stamps
Stamped '5 1/2 CUPS' on the interior center flange. Usually accompanied by a 'MIRRO / MADE IN U.S.A.' or 'THE FINEST ALUMINUM' stamp elsewhere on the rim (partially obscured in this view).
Construction Details
Industrial die-pressed or stamped construction. The item is formed using a high-pressure mold from a single sheet of aluminum, providing a seamless interior for food release.
Functional Features
Curved shape to accommodate a gelatin ring; includes an integrated hanging hole (located on the concealed rim) for wall display. Designed for chilling aspics, jellies, or mousses.
Handle & Grip Details
No dedicated handles; features a flat rolled rim for gripping and a small integrated metal loop for hanging on a wall hook.
Craftsmanship Details
Machine-manufactured industrial quality. The uniformity of the scale pattern and the clean stamping of the capacity indicate a high-quality industrial die but lack the unique irregularities of hand-chased silver or copper.
Authentication Indicators
The '5 1/2 CUPS' stamp font is a known Mirro commercial typeface; the distinct pinkish-orange hue of the anodized layer identifies it as aluminum rather than solid copper or silver-gilt.
Origin & Manufacturing
United States of America, likely Manitowoc or Two Rivers, Wisconsin. Manufactured using mass-production mechanical stamping techniques.
Era & Period
Mid-Century Modern (Late 1950s - 1970s). This period saw a surge in 'decorative' kitchenware that doubled as wall art, reflecting the popularity of gelatin-based salads.
Age Estimate
Circa 1960. The font of the '5 1/2 CUPS' stamp and the specific copper-anodization hue are diagnostic of mid-century Mirro production.
Cultural Significance
A symbol of the 1950s/60s 'Gelatin Era' in American cuisine, representing the transition from scratch-made meals to processed, visual-heavy party food.
Condition Notes
Very Good. The anodized surface shows typical minor scuffing and light scratches from handling. No major dents or significant 'pitting' (oxidation) common with aluminum exposed to acidic foods.
Value Estimate
$10 - $25 USD. These are widely available at estate sales and antique malls and are valued more for nostalgia and kitchen decor than as precious metal assets.
Care & Maintenance
Hand wash with mild detergent; avoid the dishwasher which will strip the anodized color and turn the aluminum grey. Avoid abrasive scouring pads to prevent silver-colored scratches.
Similar Pieces
Solid copper molds by Ruffoni or Waldow (heavier, tarnish-prone, tin-lined); newer plastic Tupperware molds; other Mirro shapes like the Pineapple or Lobster.
Interesting Facts
Mirro's 'Copper-Tone' line was marketed as the 'luxury look' for housewives on a budget, offering the appearance of expensive European copper cookware without the need for constant polishing.