https://steamcommunity.com/market/listings/440/Strange%20Starlight%20Serenity%20War%20Paint%20(Factory%20New)

https://steamcommunity.com/market/pricehistory/?country=US&currency=1&appid=440&market_hash_name=Strange%20Starlight%20Serenity%20War%20Paint%20(Factory%20New)

["Dec 04 2020 01: +0",269.99,"1"] = 124 keys

["Dec 06 2020 01: +0",236.245,"2"] = 109 keys

["Dec 06 2020 01: +0",236.245,"2"] = 109 keys

["Dec 10 2020 01: +0",230,"1"] = 111 keys

["Jan 07 2021 09: +0",274.18,"1"] = 114 keys

https://backpack.tf/profiles/76561198110369097#!/compare/1612569600/1612742400

https://backpack.tf/profiles/76561198316071886#!/compare/1612656000/1612742400

https://imgur.com/DM4EsMn - Screenshot provided by seller

This was 137 keys, the 2nd compare is not in the item history

https://backpack.tf/profiles/76561198316071886#!/compare/1612656000/1612742400

https://backpack.tf/profiles/76561198111860392#!/compare/1612656000/1612742400

190 key stack in 1st compare matches to the buyer in the item history

https://backpack.tf/item/9766215261

190 looks high compared to everything else, going with 109-137