Visiting Delhi for the first time

Hey all,

I'm visiting Delhi for the first time and have a few days left. I personally love the look of the new currency and live to collect currency from around the world. Is there anywhere I can go to find 1000 and 2000 notes? I think they're not in circulation anymore but maybe someone is willing to sell them (Im guessing they're just paper now but not sure what's the deal with those). Thanks!