From stained glass to tabletop
William J. Blenko was an English glassmaker who came to the US and started making glass in Kokomo, Indiana, in 1893. After several ventures that didn't last, he set up in Milton, West Virginia, in the early 1920s as Eureka Art Glass, making sheet glass for stained-glass windows. Blenko stained glass ended up in places like Washington National Cathedral.
The company became Blenko Glass Company in 1930, and during the Depression it started making hand-blown decorative glassware alongside the window glass. Blenko is still in Milton and still family-run today.
The designer years
In 1947 Blenko hired its first full-time designer, Winslow Anderson. Wayne Husted followed (1953 to 1963), then Joel Philip Myers, John Nickerson in the early '70s, and Don Shepherd from 1975 to 1988. The mid-century pieces from these designers are what most collectors chase: tall decanters with oversized stoppers, sculptural vases and heavy, saturated color.
Crackle glass
Crackle glass is made by dunking hot glass in cold water so the surface fractures, then reheating it to seal the cracks in. Blenko was making crackle before 1946, when it went into the catalog, and the 1950s and '60s were its peak.
Other West Virginia makers like Pilgrim, Rainbow and Kanawha made plenty of crackle too, so crackle alone doesn't mean Blenko. Shape, color and stopper style are better clues.
How to identify Blenko
Blenko has long used a paper sticker with a hand-shaped design, but most vintage pieces lost theirs years ago. Collector references date an acid-etched "Blenko" signature on some pieces to roughly 1958 to 1960. Blenko says it has sandblasted the bottom of everything it makes since the early 2000s, so a sandblasted mark usually points to newer production.
Without a mark, compare shape and color against Blenko's old catalogs and look for a pontil mark from hand-blowing. Blenko itself says it can't authenticate individual pieces, so we tell you what we know and how sure we are. One trap: "Blendo" is not Blenko. It's a decorated glassware line from a different West Virginia company.
Is Blenko glass valuable?
Designer-attributed mid-century pieces, big decanters with their original stoppers, and harder-to-find colors draw the most interest. Condition matters a lot: chips at the stopper or rim, scratches and cloudiness all pull value down. Recent sold listings beat any value chart.
Blenko Glass FAQ
Is Blenko glass marked?
Usually not, on vintage pieces. Blenko used paper stickers that often fell off, some late-1950s pieces have an etched signature, and Blenko says it has sandblasted all its wares since the early 2000s.
How can I tell Blenko from other crackle glass?
Crackle was made by several West Virginia companies, including Pilgrim, Rainbow and Kanawha. Blenko pieces tend to be full-size, heavy and boldly colored, and catalog shapes and stopper styles are the best way to narrow it down.
Is Blenko glass still made?
Yes. Blenko is still hand-blowing glass in Milton, West Virginia. Most of what we sell is vintage, and newer pieces usually carry a sandblasted mark on the base.
Is Blenko glass valuable?
Some is. Mid-century designer pieces, large decanters with original stoppers and less common colors tend to bring the most, and condition makes a big difference.