This one is easy.

One of two in existence, one of one on the market (now he has removed his relist), and one recorded sale.

Sold for 2 buds and 2 keys pure, coming to 2.09 buds, or 2.1 if you're backpack.tf and don't do such a precise denomination for unusuals.

Sale: http://higgs.rghost.ru/47731168/image.png

OP search: http://www.tf2outpost.com/search/135402489

Thanks for reading, and thank you Master Blaster for the proof for this suggestion. Constructive criticism welcome as always. Have a nice day everyone : )

A story:

There I was, wasting time looking for unusuals to buy when I come across a guy selling his Overclocked Nickel Amassment for 3.5 buds, when he claimed to have bought it for four. Decided to verify this claim, and found out he lied, and asked the previous owner to screenshot his trade so I could call the current owner out on it. He then blocked me and closed the trade. So here I am, because I'm mean and don't like liars : )

http://puu.sh/3NOjd.jpg