I'm using the same proof as DARKLY | Potato, just resubmitting it so its not 19-19 but instead 19-20 (which I and many other presume is what he meant.)

http://www.tf2outpost.com/trade/9925551

Here's the first link, we can see that he has a C/O of Massed Flies Dead Cone + sweets which is 17-20 Keys + sweets. Also has a C/O of SF Fish, SF Sandvich and 4 Keys.

http://www.tf2outpost.com/trade/9479920

Here's the second link, where it shows the owner sold his Searing Plasma Buckaroo's Hat for a Bills + 14 Keys (22 Keys).

http://www.tf2outpost.com/trade/9697412

Here, this guy has an offer of a NnB Industrial, which is 19-23 Keys. And a possible add of 22 Keys.

As stated before, this is simply a re-submission of DARKLY | Potato, and all the credit goes to him. The only purpose of this is to fix the whole 19-19 glitch and make it 19-20 (which is probably what he meant.)

Thanks!