This is a mess

https://backpack.tf/item/7919615581

#1 https://backpack.tf/profiles/76561198232041512#!/compare/1643760000/1643932800

60k

#2 https://backpack.tf/profiles/76561198022330462#!/compare/1644278400/1644364800

50k

#3 https://backpack.tf/profiles/76561198419294613#!/compare/1648684800/1649116800

https://backpack.tf/profiles/76561199111664710#!/compare/1649030400/1649116800

Wasn't a quicksell, it took from 8th Feb to the 5th Apr to sell. Can't trace what it actually sold for though. - Lemons

#4 https://backpack.tf/profiles/76561199111664710#!/compare/1649030400/1649116800

https://backpack.tf/profiles/76561198065283212#!/compare/1649030400/1649116800

Then it quicksold, for 35 keys, on the same day it was purchased (5th Apr)

There's also a new quickbuyer for 35 keys - https://gyazo.com/ef77ee544c5f4c119f17d441d697f573

35 won't be usable here - Lemons

#5 https://backpack.tf/profiles/76561198065283212#!/compare/1649548800/1649462400

https://backpack.tf/profiles/76561198001673221#!/compare/1649548800/1649462400

45k

Another sale for 61: rounding to 60

https://backpack.tf/profiles/76561198001673221#!/compare/1649808000/1649894400

https://backpack.tf/profiles/76561198062225011#!/compare/1649808000/1649894400

Sales -

35k

45k

50k

60k

61k, ~60k

35 low here as pointed by Lemons

Going with 45-60k

Thanks to Pefe for the work in previous sugg and Lemons for the freebie and remarks!

Cheers!