To tell vintage Pyrex from new Pyrex, check the bottom for the brand logo. Vintage Pyrex is stamped with all-caps "PYREX", while new production features a lowercase "pyrex". Additionally, vintage pieces are made of durable borosilicate glass (can go from freezer-to-oven), whereas modern versions use soda-lime glass.
Pyrex can last a long time. If you have Pyrex that's still in good condition (i.e., no cracks or chips in the glass), don't throw it away. Give it away or donate it to a thrift shop.
To determine if your Pyrex is worth money, focus on age, rarity, and condition. Vintage pieces (1915–1970s) in excellent, unblemished condition are the most valuable.
To date Pyrex, flip the piece over and examine the backstamp, logo, and inventory numbers. The branding, material, and shape offer the clearest clues to determine when a piece was manufactured.
The most sought-after vintage Pyrex features unique colors, promotional motifs, and limited-release production runs. Highly prized sets like the 1958 Lucky in Love Lucky in Love, Atomic Eyes Atomic Eyes, and Golden Sunflower Golden Sunflower Daisy routinely command thousands of dollars among collectors.
The most common and popular vintage Pyrex patterns are Butterfly Gold and Spring Blossom Green (often called "Crazy Daisy"). Produced in the 1970s and 1980s, these were mass-marketed and often paired with Corelle dinnerware, making them kitchen staples in millions of homes.
Numbers on the bottom of vintage Pyrex dishes are product identification codes indicating the mold size and model type. These 3 or 4-digit numbers allow collectors to identify specific bowls, casseroles, or lids, often with the last digit denoting capacity in pints or quarts (e.g., 401 = 1.5-pint bowl).
To tell vintage Pyrex from new Pyrex, check the bottom for the brand logo. Vintage Pyrex is stamped with all-caps "PYREX", while new production features a lowercase "pyrex". Additionally, vintage pieces are made of durable borosilicate glass (can go from freezer-to-oven), whereas modern versions use soda-lime glass.
Most Pyrex pieces are rated as dishwasher safe, but we don't recommend it. Most dishwashers use high-temperature water to wash your dishes, and dishwasher soap can be full of chemicals.
Use barkeepers friend liquid, it is not so abrasive. Bon Ami, or Bar Keepers Friend. I've cleaned my Pyrex with it many times. Magic eraser!
Vintage Pyrex refers to glassware manufactured by Corning Glass Works between the 1940s and 1970s. Authentic pieces feature a distinct, highly durable borosilicate glass.
Vintage Pyrex is highly expensive due to a mix of nostalgia, limited supply, and superior durability. Prices routinely soar from $50 to hundreds or even thousands of dollars based on several key factors:
How you handle old Pyrex depends entirely on its condition and value. For safety, always check for chips and remember to dispose of severely damaged or broken pieces in the regular trash, as they cannot be recycled.
Using vintage Pyrex (made before the late 1970s) for eating or cooking comes with serious risks. While the glass itself is inert and food-safe, the painted exteriors on these colored bowls and baking dishes frequently test positive for high levels of lead and cadmium.
Specialised Recycling
Bedsheets & Linen in good condition are often collected in door-to-door collection drives and cash for trash events. Items that don't meet their quality standards may be rejected or sent for incineration.
Pyrex (glass) cannot be recycled in your local council's kerbside recycling bin, box or bag. Pyrex dishes can be disposed of in your rubbish bin or brought to your local Household Waste Recycling Centre.
The most sought-after vintage Pyrex patterns are driven by color, scarcity, and mid-century aesthetics. Highly coveted designs feature rare promotional motifs (like "Lucky in Love" or "Atomic Eyes") and vibrant, iconic colorways (such as Pink Gooseberry, Butterprint, and New Dots).
NO - Do not use Pyrex® glassware on the stovetop (open flame, electric burner), under the broiler, in a toaster oven, or on a barbecue grill.
The naming of these new pieces as "Cinderella" likely had much to do with the popularity of the Cinderella story current at the time both in film and on Broadway. Corning marketers also hoped the underlying theme of a coveted glass object would have a subliminal effect on consumers.
The rarest and most valuable vintage Pyrex piece is generally considered to be the "Lucky in Love" 1-quart casserole dish, dating back to 1959.
To date Pyrex, flip the piece over and examine the backstamp, logo, and inventory numbers. The branding, material, and shape offer the clearest clues to determine when a piece was manufactured.
The "good" Pyrex is vintage glassware featuring the uppercase PYREX logo. Made from borosilicate glass, it can handle extreme temperature changes (thermal shock). Modern glassware has a lowercase pyrex logo. Made of tempered soda-lime glass, it is more prone to shattering from sudden temperature shifts.
Here's how to spot the real vintage pieces when you're thrifting:
Plastic #5 - PP (Polypropylene)
Used in production of most yogurt containers, some pancake syrup bottles, and bottle caps. Can be recycled into plastic lumber, bins, car battery cases, brooms, and ice scrapers.
The Pyrex 222 2-quart glass baking dish is a versatile kitchen essential perfect for baking, cooking, serving, and storing food. Made from durable, high-quality tempered glass, this dish is designed to withstand everyday use in the kitchen.