India post financial services

1. http://www.indiapost.gov.in/posb.aspx
2. Why not our Present Govt. issue 15 years bearer bonds in denominations of RS.100/200/250/500/1000/2000/2500/5000/10000
3. which can be  transferred from person to person by delivery
4. Doubling in 15 years payable to the bearer 
5. with an additional premium of 10 percent of the face value to the holder of the bond on maturity.
6. This will bring in all the unaccounted cash which we call
7. as Black Money.
8. These proceeds can be utilized for all round development of all public projects.
9. If not feasible or practical can someone give me the valid reasons??????
10. Thanks a lot. a lover of India.