Seems like you sold it alongside a Double-Spelled (Voices From Below & Headless Horseshoes) Haunted Voodoo-Cursed Medic Soul (155 Keys) for 1100 Keys (945 Keys total)

https://backpack.tf/profiles/76561198328282971#!/compare/1785196800/1785283200

https://backpack.tf/profiles/76561198077555267#!/compare/1785110400/1785283200

Medic Soul has no usable sales, but it does have buyers at 155 which we can use.

If this sale is wrong, then feel free to correct me. But in any case, it seems that 1900 is a very distinct outlier. If we wanted to take this a step further, the bulk Golden Pan sale further supports 1900 being an outlier, as that sale seems to have involved 2400 Keys, not even including the other unusuals that already values the Gauzed at lower than 1900.

Assuming your sale is correct, I feel 945 shouldn't be used due to it being even closer to buyers than 1000 is, not to mention the fact that we're using buyers for the Medic Soul which indicates this sale could be even lower if it gets a proper sale. 1000 isn't so close to buyers that I would deem it an outlier, and it seems to be the most usable sere. So unless your 945 sale is incorrect and it's actually higher than 1000, I would resuggest this at 1000 flat.