All other versions haven't been seen in 1 year or more.

4 recent sales, unpriced.

Sale 1:

http://backpack.tf/profiles/76561198262604439#!/compare/1489276800/1489363200

Sold for a KaW Tin Topi(10) and ~1 key in sweets when rounding.

11 total.

Sale 2:

http://backpack.tf/profiles/76561198296062531#!/compare/1488067200/1488153600

http://backpack.tf/profiles/76561198148315654#!/compare/1487980800/1488153600

Low outlier.

Not using.

Sale 3:

http://backpack.tf/profiles/76561198296062531#!/compare/1488153600/1488240000

http://backpack.tf/profiles/76561198005032783#!/compare/1488067200/1488153600

1:1 with a Strange Bubbling Base Metal Billycock(11).

11 total.

Sale 4:

http://backpack.tf/profiles/76561198128931437#!/compare/1481673600/1486857600

Untrace.

Strange Bubbling Base Metal Billycock mini:

http://backpack.tf/profiles/76561198112939394#!/compare/1484784000/1484870400

Sold for 11 keys pure.

Rolling with 11 flat.