International Silver Co. Berkeley Pattern Silver Plate Fork
Flatware (Fork) · International Silver Company (I.S. CO). Formed in 1898 in Meriden, Connecticut as a corporation of numerous silver producers, becoming the world's largest manufacturer of silver and silver plate in the early 20th century.
Pattern: Berkeley pattern, introduced in 1913. It is a legacy pattern from the International Silver Company's mass-market lines.

Type
Flatware (Fork)
Maker
International Silver Company (I.S. CO). Formed in 1898 in Meriden, Connecticut as a corporation of numerous silver producers, becoming the world's largest manufacturer of silver and silver plate in the early 20th century.
Material
Silver Plate (Electroplated Nickel Silver). The 'A1' mark signifies a standard grade of silver plating (usually 2 troy ounces of silver used to plate a gross of teaspoons). The base metal is a non-precious nickel-copper-zinc alloy.
Dimensions
Standard dinner or luncheon size, likely 7 to 7.5 inches in length. Weight is typical of plated nickel silver, which is denser than sterling.
Description
This fork represents a classic example of American mass-production silver plate from the early 20th century. The Berkeley pattern utilizes a rich, rope-like gadroon border that provides a sense of formality and substance. Produced by the International Silver Company, it was designed to offer the middle-class consumer the look and feel of heavy sterling silver at a much more accessible price point.
Key Features
The 'A1' plating stamp and the 'I.S. CO.' abbreviated maker's mark are the primary diagnostic features. The rope-twist bordering is characteristic of the Berkeley pattern.
Material & Composition
Silver Plate (Electroplated Nickel Silver). The 'A1' mark signifies a standard grade of silver plating (usually 2 troy ounces of silver used to plate a gross of teaspoons). The base metal is a non-precious nickel-copper-zinc alloy.
Finish & Decoration
Die-struck embossed decoration in the Neoclassical/Beaux-Arts style. Features a gadroon or rope-style border (swirled leaf motif) with a beaded tip terminal and foliate scrolls at the shoulders.
Hallmarks & Stamps
Stamped 'I.S. CO. A1'. 'I.S. CO.' stands for International Silver Company. 'A1' is the quality mark for the silver plating thickness. There are no sterling (.925) or lion marks present.
Construction Details
Machine-manufactured via die-striking. The pattern is pressed into the base metal blank using high-pressure steel dies before the electroplating process.
Functional Features
Tapered handle for grip balance; designed for daily dining use. The silver plate provides a hygienic surface over a durable base metal body.
Handle & Grip Details
Solid one-piece construction. The handle flares toward the terminal (end) and features a raised decorative border on both the front and back (full-patterned handle).
Craftsmanship Details
High-quality industrial production. The die-work is crisp, showing clear definition in the swirls and beads, despite being a mass-produced item.
Authentication Indicators
The 'A1' mark is a definitive indicator of silver plate rather than sterling silver. Construction is consistent with early 20th-century industrial stamping techniques.
Origin & Manufacturing
United States; manufactured in Meriden, Connecticut, by the International Silver Company factories.
Era & Period
Early 20th Century / Edwardian era (c. 1913-1930s). The design reflects the transitional Neoclassical revival popular during the pre-WWI period.
Age Estimate
Circa 1913–1940. Given the specific 'I.S. CO. A1' mark, it is likely a mid-production piece from the 1920s or 1930s.
Cultural Significance
Represents the democratization of luxury in the United States, where the 'silvered' lifestyle became affordable to the growing middle class through industrial innovation.
Condition Notes
Good condition with visible tarnish and light surface scratches (patina) consistent with age/use. Minimal 'bleeding' (base metal showing through silver) is visible at the high points of the embossing.
Value Estimate
$2 - $10 USD. As a common silver plated piece, it holds more sentimental or replacement value than investment value; it is not valued for its scrap metal content.
Care & Maintenance
Clean with a mild silver cream (e.g., Wright's). Avoid over-polishing or using abrasive dips, as the thin silver layer can be worn away to reveal the yellow/grey base metal.
Similar Pieces
Often confused with 'Vintage' or 'Charter Oak' patterns by 1847 Rogers Bros. (also an IS Co brand), but distinguished by its specific gadroon and bead arrangement.
Interesting Facts
International Silver Co. was a conglomerate of several famous silver companies including Rogers, Meriden Britannia, and Forbes. The 'A1' rating was a marketing tool used to reassure customers of the plating's durability.