Histories don't match on sale 3, user probably sold the 0lf 0st0em for 9 or 10 (or something I dunno) to the bought and then bought the smoking scotch.

Also key histories don't match on sale 7 but it's whatever; they look like they were obtained and spent right after.

-Unsold at 14 for 7 months supports: https://backpack.tf/item/5371868760

All things considered, despite your basis for 11 being kind of sketchy (a pure sale in which histories didn't match and a 1:1), I'm willing to accept because the votes favor this suggestion and worst case scenario this requires a resugg with a .5 key error (if even, 11 key sale looks right anyway maybe I'm being paranoid).