A small figure blowing glass is included in some early stamps.The oldest Pyrex markings should be on the bottom of glass pieces and feature Pyrex in all capital letters inside a circle with CG for Corning Glassworks.Use the glass markings, stamps, and logos on the pieces themselves to identify when the glass was produced. The color and pattern isn't the only thing that will help you determine whether your Pyrex is antique or vintage. World Kitchen now owns the Pyrex brand and has reintroduced some of the popular patterns, so it is important to verify you have the vintage version. Clear tinted glassware lines, like Flameware, Fireside, and Vision, were also common and their individual hues can help identify and date them. Limited patterns and promotional patterns were also released over the years, although they may be more difficult to find. For example, the "Gooseberry", "Butterprint Amish", and "Spring Blossom" patterns are all considered Americana patterns says BonAppetit. Sometimes, groups of patterns are referenced together. "Autumn Wheat" showcased sheaves of wheat in the 1980s."Butterfly Gold" had a floral pattern in the 1970s."Friendship" highlighted deep orange and yellow roosters in the 1960s."New Dot" featuring large colorful dots on white in the late 1960s."Town and Country" designs that featured abstract star-like designs in the 1960s."Gooseberry" featuring the berries on vines with leaves in the late 1950s through most of the 1960s."Butterprint" farm scenes with male and female figures, roosters, and plants from the later 1950s to late 1960s.Antique Bottle Markings for Dating & Identification.Vintage CorningWare Patterns and Values."Snowflakes" (both white on blue and white on black) from the mid-1950s to late 1960s.
#VINTAGE PYREX CASSEROLE DISH PLUS#
Primary colors (red, yellow, blue, plus green) from 1945 to 1950.The Corning Museum of Glass's Pyrex Pattern Library and Pyrex Pattern Reference from Pyrex Passion have timelines that features popular colors and patterns through the years. Pastel shades of blue, green, pink, and more became common, although bright primary colors also had their time along with more muted earth tones. In the mid-1940s, however, colored and patterned bowls and casserole dishes began appearing and are what many collectors seek today. Pyrex glassware made by Corning Glass Works was originally clear. How to Tell If Pyrex Is Vintage Using Patterns and Colors