Authenticity Glass Rarity 
Invaluable
AUGUST 28, 2024
If the doll comes with a certificate of authenticity or other identifying provenance documents, this information can help. Many of the most exquisite, innovative designs are still credited to France, such as Ainé Blampoix’s patent for applying glass eyes. Rarity can increase the price of a collectible doll. Thuillier A.T.
Invaluable
APRIL 3, 2024
The destruction of many historic artifacts in the 1960s and 1970s paired with the overall delicacy of the materials means that well-preserved, authentic Chinese antiques are increasingly difficult to find. Snuff bottles are most commonly made of glass, but can also comprise of jade, porcelain, amber, or metal.
Jerry's Antiques and Estates
JULY 4, 2023
These artifacts’ scarcity, authenticity, and provenance all affect their historical and monetary value. Jerry’s Antiques specializes in modern antiques such as mid century modern furniture, vintage electronics, retro kitchenware, art glass, modernist art, industrial furniture and decor, and contemporary studio pottery.
Penrose Appraisals
DECEMBER 14, 2022
" One usually needs a magnifying glass to tell the difference between grades 8, 9, and 10, but the difference in value can be 200-300%. Ebay has added authentication services recently to try to address this (as they have with tennis shoes!) The same card was released in different sets at different times and this changes the value.
WorthPoint
FEBRUARY 10, 2025
The condition was good, with only minor drips on the left side, and it’s UV-tested, ensuring its authenticity. While Ive seen her famous penguin vases fetch well over $10,000thanks to their rarity and high demandIve never come across a lamp by her before. It was a huge win for Leonard Auctions, who nailed this one!
WorthPoint
FEBRUARY 3, 2025
The matching top, likely original to the piece, adds extra charm and authenticity. Given that this is the only example listed in our database, its a true rarity in the world of collectible Nippon pieces. Stunning Glass This pair of Northwood Leaf Mold Dresser decanters went for a solid $2,625.
WorthPoint
FEBRUARY 4, 2025
Standing at an impressive 58″ tall, the hand-blown glass globes and sleek chrome base made it a striking piece with that perfect “Italian statement” look. At $696.50, it felt like an absolute bargain, especially considering how rare authentic Black Forest pieces are these days.
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