I was supposed to finish this suggestion 6 days ago.

Welp.

Sold for 1 Bud(12 Keys at the time)

http://backpack.tf/profiles/76561198123251772?time=1424678400 -> http://backpack.tf/profiles/76561198123251772?time=1424820329

Sold for a Bubbling Buckaroos Hat(10 Keys with Overpay)

http://backpack.tf/profiles/76561198174196601?time=1424842467 -> http://backpack.tf/profiles/76561198174196601?time=1424851200

Sold for ~10 Keys in Items

http://backpack.tf/profiles/76561198112789030?time=1424934607 -> http://backpack.tf/profiles/76561198112789030?time=1425024000

http://backpack.tf/profiles/76561198151398956?time=1424851200 -> http://backpack.tf/profiles/76561198151398956?time=1425110400

Bubbling Buckaroos Hat mini suggestion

Sold for a Steaming Gridiron Guardian(11 Keys with Overpay)

http://backpack.tf/profiles/76561198125666738?time=1426709248 -> http://backpack.tf/profiles/76561198125666738?time=1426748400

Sold for a Steaming Heavy Duty Rag(11 Keys with Overpay)

http://backpack.tf/profiles/76561198099804614?time=1426748400 -> http://backpack.tf/profiles/76561198099804614?time=1426834800

Sold for a Nuts & Bolts Bootleg Base Metal Billycock(11 Keys with Overpay)

http://backpack.tf/profiles/76561198110235898?time=1423784960 -> http://backpack.tf/profiles/76561198110235898?time=1423900800

Using 11.

Sales seem to fit, 10-12 should be fine.

Additional Proof/Counter-Proof/Constructive Criticism/Feedback is always appreciated.