I've got every Gun Mettle Weapon Skin FN, it took 3 months to make

Sale 1

[No OP Trade] Sold for 15 keys

X = 15

Keys https://gyazo.com/a25db3e6f015ed234dc333bd43bad0e8 http://backpack.tf/profiles/76561198061836787?time=1438930800&compare=1439017200

Rain http://backpack.tf/item/930463220

Sale 2

http://www.tf2outpost.com/trade/26792677 Sold for 15 keys + Festive Scatter

B/O for Raincatcher was 19

X = 15 + 1*0.9

X = 16

Raincatcher http://backpack.tf/item/281479207

Keys https://gyazo.com/5f68af07aa2e9a2da778a5a19cf72b40 http://backpack.tf/profiles/76561198219681600?time=1439708400&compare=1439794800

3 of the keys match the histories as they are still present in the backpack at time of scan

Most of the keys were possibly used to buy the Bubbling Hoodie which entered the backpack on the same day http://backpack.tf/item/1366110586