During the process of drafting the Atlantic Charter which set out American and British goals for the world after the end of World War II, an error crept in the text in London, but there are no indications the document was officially signed.
The document was threshed out through several drafts, and the final agreed text was telegraphed to London and Washington, DC. The Atlantic Charter was a statement issued on 14 August 1941 that set out American and British goals for the world after the end of World War II. During the process, an error crept into the London text, but it was subsequently corrected. No signed version ever existed. It made no mention of any signing or ceremony. 
