On 8 December 2008, the Bulgarian National Bank (BNB) issued a revised 10-lev (US$6.50) note similar to the existing 1999 note (Pick 117), but with new date, signatures, and security features, including a red-to-green windowed security thread with demetalized text, watermark with electrotype bank initials, latent image, and UV elements.
Courtesy of Krassimir Dimitrov.