Only one sale indate, happened through marketplace

https://marketplace.tf/items/tf2/133;14

Only indate compare Includes Zauberer which was the person to sell them afaik.

Key prices average 1.97 at the day of sale, June 3rd.

Rounding 1599 usd sale to 1600. 1600/1.97 = 812 keys.

Compares come back empty for most recently moved pair

Zauberer: https://backpack.tf/profiles/76561198140559064#!/compare/1748217600/1748563200

Civ: https://backpack.tf/profiles/76561198118319408#!/compare/1745452800/1745625600

Goofed up last sugg and took the wrong average key price. Adjusted from 1.94 to 1.97*

Other compares show killstreak variants which i have ignored.