Here you will find all the ID and all relevant info about the letter from septimus signus
Letter from Septimus Signus: Editor Name & Spawn id
What is the Editor Name of the Letter from Septimus Signus?
DA04SeptimusLetter
Letter from Septimus Signus ID Code:
000F6842
Letter from Septimus Signus: Spawn Commands
Spawn Command to get the Letter from Septimus Signus into the game:
Open the console and enter [player.AddItem] then the [Base ID] and then the [Amount]. With the example below, you will add one Letter from Septimus Signus.
player.AddItem 000F6842 1
Spawn Command to place the Letter from Septimus Signus in front of your character:
Open the console and enter [player.AddItem] then the [Base ID] and then the [Amount]. The example below places one Letter from Septimus Signus in front of your character.
player.PlaceAtMe 000F6842 1