The D-1 ten rupee note is an early Reserve Bank of India ten rupee note signed by Governor C.D. Deshmukh, one of the earlier signatories to appear on the RBI's ten rupee notes. The catalogue reference D-1 identifies this particular type, which is why it draws steady interest from note collectors.
Early signatory notes like this are collected for their place in India's currency history. What a given piece is worth depends on its grade, paper quality, serial number and overall condition — a crisp, uncirculated example sits well above a used, folded one, and a clean or unusual serial number can add further appeal.
On Coinbazzar you can see the exact note featured in the video, with its serial number and condition described, and buy a verified piece. The listing on this page shows the current price.