Collector guides
Vintage glass identification guides
The questions we get in every show, answered properly: how to tell what you've got, what the marks mean, and which lookalikes trip people up. Written by two treasure hunters who'd rather say "we're not sure" than guess.
Collector guide
How to identify uranium glass (and why 365nm UV matters)
How to identify uranium glass: why a 365nm UV flashlight beats 395nm, what a real glow looks like, manganese lookalikes, painted fakes, and what UV can't tell.
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Vaseline glass vs uranium glass: what's the difference?
Vaseline glass vs uranium glass explained: why all Vaseline is uranium glass but not the reverse, plus custard, Burmese, jadeite, Depression and bluranium.
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Is uranium glass safe? What the experts actually say
Is uranium glass safe to collect, display or eat from? A plain-English look at what the NRC, EPA and ORAU say about radiation, food use and broken pieces.
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Fenton glass marks: how to identify and date Fenton
Fenton glass marks by era: unmarked early pieces, paper labels, the 1970 oval logo, decade numbers, the script F, artist signatures, and reproductions to avoid.
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Vintage Pyrex patterns: how to identify, date and care for them
Vintage Pyrex patterns explained: Butterprint, Gooseberry, Pink Daisy, Snowflake and more, plus Cinderella bowls, how to date Pyrex, DWD and how to care for it.
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Hen on nest dishes: makers, marks and how to identify them
Hen on nest dish makers and marks: Westmoreland, Indiana, Imperial, Kemple, Boyd, Degenhart, Fenton and French hens, plus mold swaps and reproductions to watch.
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How to buy vintage glass on Whatnot: a collector's guide
New to Whatnot? How live glass shows work: following sellers, bidding, sudden death auctions, givvys and raids, what to ask before you bid, and shipping basics.
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How to identify Blenko glass: color, crackle and labels
How to identify Blenko glass: the hand sticker, sandblasted marks since the early 2000s, crackle, bold colors, designers by era, and why old catalogs help most.
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How much is uranium glass worth? What really drives the price
How much is uranium glass worth? The glow alone doesn't set the price. Maker, pattern, form, age and condition do. Here's how to size up any glowing piece.
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How to tell if Murano glass is real: labels, signatures and red flags
How to tell if Murano glass is real: original labels, traceable signatures, the Vetro Artistico Murano mark, hand-made clues and the Murano-style red flags.
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Fenton hobnail glass: how to identify it (and tell it from other hobnail)
How to identify Fenton hobnail: when Fenton made it, opalescent and milk glass colors, the oval logo and decade numbers, and the hobnail look-alikes to know.
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What is Depression glass? How to identify it and spot reproductions
What is Depression glass? Cheap, machine-made colored glassware from about 1929–1939. How to identify patterns and colors, spot reissues and test for a glow.
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Is vintage Pyrex worth anything? What makes Pyrex valuable
Is vintage Pyrex worth anything? How pattern, colorway, promotional rarity, complete sets, lids and dishwasher damage affect value, and how to price your piece.
Read the guideGot a piece you can't place? Bring it up in the chat during a show, or send us a photo.