A Guide to Vintage Pyrex

Start with the backstamp

The underside of a Pyrex piece tells you more than almost anything else. Flip the dish over and look for the stamped or printed logo, which changed over the years.

• 1920s–1950s: Early Pyrex is often marked with "PYREX" in all caps, sometimes with "Corning Glass Works" or "Made in U.S.A." nearby. These pieces are clearer, borosilicate glass rather than the opaque opal glass most collectors associate with Pyrex patterns.
• 1950s–1970s: Look for the classic "PYREX" in a rounded rectangle or the circular "PYREX" logo with the Corning mark. This era covers most of the famous opalware patterns.
• 1980s and later: Logos became simplified, often with "pyrex" in lowercase. Patterns from this period are generally less sought after by collectors.
• Promotional pieces: Some limited-run patterns carry no backstamp at all, or just a model number. Those pieces are identified by shape and pattern instead.

Know the most collectible patterns

Pyrex produced dozens of patterns between the 1950s and 1980s. These are the names you will see most often in vintage shops and online listings:

• Butterprint: Turquoise or pink Amish-style farm motifs on white. The turquoise-on-white version is especially common and beloved.
• Gooseberry: Black or pink gooseberries on white. The pink version is one of the most recognizable Pyrex patterns.
• Friendship: Bold red and orange birds on a white background. A 1970s promotional pattern that is highly collectible today.
• Spring Blossom Green: Green floral medallions on white, often called "Crazy Daisy" by collectors.
• Snowflake: Blue or white snowflake motifs. The blue-on-white version was a staple for years.
• Pink Daisy: Pink daisy flowers on white, cheerful and distinctly 1960s.
• Starburst: Atomic gold starburst designs on turquoise or black. True starburst pieces command a premium.
• Barcode / Stripes: 1970s and 1980s linear patterns in earth tones. Less valuable but still fun for everyday use.

Date by shape and colour

Patterns help, but the shape and colour of a piece can narrow down the era too. Round casseroles with clear glass lids were common from the 1950s through the 1970s. Cinderella bowls — the nesting bowls with integrated handles — became iconic in the 1960s and 1970s. Refrigerator sets, divided dishes, and baking dishes were made in many of the same patterns.

Colour is also a clue. The bright turquoise, pink, yellow, and red palettes of the 1950s and 1960s gave way to avocado, harvest gold, and brown in the 1970s. If a piece looks muted and earthy, it is likely from the later decade.

Condition matters

When you find a piece you like, check it carefully before buying. Common issues that affect value include:

• Utensil marks: Grey or silver streaks from metal spoons are very common. They do not usually affect usability, but they lower display value.
• Chips and cracks: Any damage to the rim or body usually makes a piece unsuitable for use and far less collectible.
• Faded patterns: Dishwasher wear can fade printed patterns. Hand-washing helps preserve the decoration.
• Missing lids: A complete casserole with its original lid is worth more than the dish alone. Lids are often harder to replace than the base.

Caring for vintage Pyrex

Vintage Pyrex is sturdy, but it is not indestructible. Avoid sudden temperature changes — do not move a hot dish directly to a cold counter, and never use it on a stovetop burner. Wash by hand when possible, especially for pieces with printed patterns, to keep the decoration bright. Store nested pieces with a soft liner between them to prevent scratches.

Find vintage Pyrex in the shop

We add new kitchenware and Pyrex pieces to the shop regularly. If you are looking for a specific pattern or size, send us a note — we may have it in the back room.