Another sale: 100 keys + 2 all class unusuals

https://backpack.tf/profiles/76561198269384244#!/compare/1635465600/1637107200

https://backpack.tf/profiles/76561198269384244#!/compare/1635465600/1637020800 - Darkblaze Pithy + 100 Keys + Pumpkin Moon Hat Outta Hell

https://mannco.store/item/35499 - $2016 (1200 Keys)

These sales were also in-date when this suggestion was made:

https://backpack.tf/profiles/76561198232041512#!/compare/1627430400/1627516800 - Blizzardy VVF (500 Keys) + 110 Keys + Strange Sparkling Cane

https://backpack.tf/profiles/76561198263190057#!/compare/1628380800/1628467200 - Better for the DBD Antlers

https://backpack.tf/profiles/76561198263190057#!/compare/1629244800/1629331200 - CM Company + HM Jeepcap + BF Pomade + Verdatica Smoker

https://backpack.tf/profiles/76561198996047364#!/compare/1630713600/1630800000 - ?

The Strange Sparkling Lights Citizen Cane has a sale at 80 Keys, making its sale 690 Keys for these Antlers:

https://backpack.tf/profiles/76561198316071886#!/compare/1626912000/1626998400 - 55 Keys + 5th Dimension Bat Hat

The Pithy has 2 sales:

https://backpack.tf/profiles/76561198155066949#!/compare/1629849600/1629936000 - Added 25 Keys for a CV Tossle

https://backpack.tf/profiles/76561198869144080#!/compare/1630454400/1630540800 - Added 2 Unusuals for a Scorching Legendary Lid

Those sales will make the Pithy sale support a high end of 1200 for these Antlers from the Mannco sale.

That gives sales at 650, 690, the Company/Jeepcap/Pomade/Smoker, the Pithy/Hat Outta/100, 1100, and 1200.

A wide range of 650 - 1200 would work with 2 low sales, 1 middle sale, and 3 high sales supporting each end.

Seems like there are some older sales in the same history: https://backpack.tf/item/1912689111 (in-date=past 3 months)

As you also noted in the last suggestion 650 may be a bit low, the two sales here also do seem a bit discrepant.