The Rs 10 "Peacock" issue is one of the most recognisable older Indian ten-rupee designs, and collectors prize it most as a complete 100-note serial packet. The examples here carry the signature of Governor R.N. Malhotra, with one packet ending in the lucky number 786.
A full serial bundle is harder to find intact than single notes, because most were broken up and spent decades ago. A packet that has stayed sealed and serial-wise, with fresh paper and sharp edges, is what pushes value upward - and a fancy 786 ending adds further demand.
The worth of a Peacock bundle depends on the signatory, whether the run is complete and serial-wise, and the overall grade. Coinbazzar lists verified Rs 10 Peacock packets with photos so you can check the featured bundle and its current price.