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A "device" in this context refers to a symbolic emblem or heraldic design, while a "rebus" is a puzzle where pictures represent words or syllables.
SERIAL NUMBER FOR THIS VOLUME
Leaf No. 2 . . Front Side.
original: "Recto"
(The back side is blank.)
original: "Le verso est blanc."
CLASSIFICATION OF OTHER SUBJECT MATTER
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Leonardo da Vinci Windsor Devices Rebuses Édouard Rouveyre Leaf Front Side Unpublished