| kEconItemOrigin_Invalid | -1 | | |
| kEconItemOrigin_Drop | 0 | 0x0 | |
| kEconItemOrigin_Achievement | 1 | 0x1 | |
| kEconItemOrigin_Purchased | 2 | 0x2 | |
| kEconItemOrigin_Traded | 3 | 0x3 | |
| kEconItemOrigin_Crafted | 4 | 0x4 | |
| kEconItemOrigin_StorePromotion | 5 | 0x5 | |
| kEconItemOrigin_Gifted | 6 | 0x6 | |
| kEconItemOrigin_SupportGranted | 7 | 0x7 | |
| kEconItemOrigin_FoundInCrate | 8 | 0x8 | |
| kEconItemOrigin_Earned | 9 | 0x9 | |
| kEconItemOrigin_ThirdPartyPromotion | 10 | 0xA | |
| kEconItemOrigin_GiftWrapped | 11 | 0xB | |
| kEconItemOrigin_HalloweenDrop | 12 | 0xC | |
| kEconItemOrigin_PackageItem | 13 | 0xD | |
| kEconItemOrigin_Foreign | 14 | 0xE | |
| kEconItemOrigin_CDKey | 15 | 0xF | |
| kEconItemOrigin_CollectionReward | 16 | 0x10 | |
| kEconItemOrigin_PreviewItem | 17 | 0x11 | |
| kEconItemOrigin_SteamWorkshopContribution | 18 | 0x12 | |
| kEconItemOrigin_PeriodicScoreReward | 19 | 0x13 | |
| kEconItemOrigin_Recycling | 20 | 0x14 | |
| kEconItemOrigin_TournamentDrop | 21 | 0x15 | |
| kEconItemOrigin_PassportReward | 22 | 0x16 | |
| kEconItemOrigin_TutorialDrop | 23 | 0x17 | |
| kEconItemOrigin_RecipeOutput | 24 | 0x18 | |
| kEconItemOrigin_EventPointReward | 26 | 0x1A | |
| kEconItemOrigin_ItemRedemption | 27 | 0x1B | |
| kEconItemOrigin_FantasyTicketRefund | 28 | 0x1C | |
| kEconItemOrigin_VictoryPredictionReward | 29 | 0x1D | |
| kEconItemOrigin_AssassinEventReward | 30 | 0x1E | |
| kEconItemOrigin_CompendiumReward | 31 | 0x1F | |
| kEconItemOrigin_CompendiumDrop | 32 | 0x20 | |
| kEconItemOrigin_MysteryItem | 33 | 0x21 | |
| kEconItemOrigin_UnpackedFromBundle | 34 | 0x22 | |
| kEconItemOrigin_WonFromWeeklyGame | 35 | 0x23 | |
| kEconItemOrigin_SeasonalItemGrant | 36 | 0x24 | |
| kEconItemOrigin_PackOpening | 37 | 0x25 | |
| kEconItemOrigin_InitialGrant | 38 | 0x26 | |
| kEconItemOrigin_MarketPurchase | 39 | 0x27 | |
| kEconItemOrigin_MarketRefunded | 40 | 0x28 | |
| kEconItemOrigin_LimitedDraft | 41 | 0x29 | |
| kEconItemOrigin_GauntletReward | 42 | 0x2A | |
| kEconItemOrigin_CompendiumGift | 43 | 0x2B | |
| kEconItemOrigin_CandyShopPurchase | 44 | 0x2C | |
| kEconItemOrigin_Transmuted | 45 | 0x2D | |
| kEconItemOrigin_PurchaseWithCharges | 46 | 0x2E | |
| kEconItemOrigin_Max | 47 | 0x2F | |
