first edition
US /ˌfɝːst ɪˈdɪʃ.ən/
UK /ˌfɝːst ɪˈdɪʃ.ən/
1.
the first published version of a book, especially one considered rare or valuable
:
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The collector was searching for a first edition of 'Pride and Prejudice'.
•
A rare first edition of the novel sold for a record price at auction.