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According to a press release dated 5 December 2018, the Banco Central del Paraguay has issued notes with improved security features for most denominations. Please contribute 300-dpi scans of the notes not yet confirmed.
Like B864b, but new date (2017), new signatures, and new green-to-red security thread. Prefix J. Intro: 05.12.2018.
Courtesy of Claudio Marana.