Ostrich Egg Globe

[1][3] The globe's primary investigator, Stefaan Missinne, claimed in 2013 that the globe had been "found"[4] at the London Map Fair in 2012,[4][1] by an owner who preferred to remain anonymous; that it had passed through at least two dealers' hands already; and that it "had been part of an important European collection for many decades"[4] before that.

[citation needed] Further, in 2013, Missinne claimed that the globe showed "influence from Leonardo's workshop.

"[4]: 19  By 2017 claimed that the globe was crafted in precisely 1504 by a left-handed engraver whom Missinne identifies as Leonardo da Vinci himself.

Cartographer Wouter Bracke, reviewing The Da Vinci Globe in 2019, stated that Missine's book should be considered "a report on the author's research into the globe and [not] a final scientific and academic publication," and that Cambridge Scholars Publishing's lack of editorial board "clearly failed to guide the author in the preparation of his publication."

Ultimately, while Bracke seems to accept the idea that the Ostrich Egg Globe is a true product of the "early 16th century,"[2] he states that more research is needed into its provenance and recent history.