500 & 1000 notes banned in india 
The Indian 1000-rupee banknote (₹1000) was a denomination of Indian currency. It was first introduced by the Reserve Bank of India in 1954. In January 1978, all high-denomination banknotes (₹1000, ₹5000, and ₹10,000) were demonetised to curb unaccounted money.[2][3] In order to contain the volume of banknotes in circulation due to inflation the banknote was reintroduced in 2000. On November 8th, 2016, Indian prime minister Narendra Modi announced the demonetization of the Rs.1000 notes with the claimed reason as preventing the issue of counterfeit currency and to fight corruption.

The security features of the 1000-rupee banknote included a windowed security thread that reads 'भारत' (Bharat in the Devanagari script), "1000" and "RBI". It also included latent image of the value of the banknote on the vertical band next to the right-hand side of Mahatma Gandhi’s portrait. The white field contained a watermark of Mahatma Gandhi that is a mirror-image of the main portrait. In addition, the number panel of the banknote was printed in fluorescent and optically variable ink and the paper contained embedded fluorescent fibers. Since 2005 additional security features like machine-readable security thread, electrotype watermark, and year of print appeared on the bank note.The additional security features included ascending size of numerals in the number panels, bleed lines and enlarged identification mark.

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