PROOF CREDIT GOES TO Mr. Woldwide.

Seemed like a better range.

http://www.tf2outpost.com/trade/23189860 : sold for MN Liquidator's Lid (1.4-1.5*.9=1.35 or 21ish keys overpay)19 keys

New Owner's Bp before: http://backpack.tf/profiles/76561198049290224?time=1413702000

New Owner's Bp after: http://backpack.tf/profiles/76561198049290224?time=1413961200

Unusual History: http://backpack.tf/item/1945356730

http://gyazo.com/36d097066fe663db22cb1c58846ef91a : quickbought for ~15.5 keys

http://gyazo.com/071c68f2e7b080bf954ce55d8abdc956 sold for $48 (after fees) over the market. Value that at 20 keys (based on current key price, but not a very good proof)

http://www.tf2outpost.com/trade/22718465 : asked 19 keys ( http://gyazo.com/45d3f44a0bcab8289f7c1869023960a3 : sold ~16)

Again, proof credit goes to Mr. Worldwide, but I thought this was a better range.