It is common to use double symbols in product brandnames, e . g . double happiness, double coin, double elephants etc . Cantonese.
2.
The set is known as a " double elephant " because of the size of its sheets of thick rag paper : each sheet measures 39 { by 19 { inches.
3.
It's a size known as double elephant, the same as the world's most famous bird book, " Birds of America " by John J . Audubon.
4.
A double elephant, four-volume set of " Birds of America " by John James Audubon has been sold at Christie's New York for $ 8.8 million, against an estimate of $ 4 million.
5.
From 1827 to 1838, Audubon sold his engraved, hand-colored prints through a publisher as a subscription series, with customers receiving five of the 66-by-100-centimeter ( 26-inch-by-40-inch double elephant folio-size prints at a time.
6.
Historically, printers used a range of names such as ( with approximate maximum page height ) : Double Elephant Folio ( 50 inches, 127 cm ), Atlas Folio ( 25 inches, ca 63 cm ), Elephant Folio ( 23 inches, ca 58 cm ), Royal Folio ( 20 inches, ca 51 cm ), Medium Folio ( 18 inches, ca 46 cm ), and ( the most common ) Crown Folio ( 15 inches, ca 38 cm ).
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