Where can i exchange Rs to Zimbabwean $ in Bangalore ?

Forex exchanges is asking for visa etc which i don't have. I wan it for the sole purpose of collection.Also Zim $ is very rare. I needed an exchange Rs to Zim $ . Any idea where i can get it ?|||i usually get money exchanged at the airports while travelling. try it there if ur really interested in collection. there are exchange booths at any international airport.|||airports hav exchanges :) try der