In the Picus Vault at Palisade Bank.
To access the vault you need to first get the Picus Vault Key.
It is in the top left apartment at "Libuse Apartment",
in a safe behind a painting. Move the camera to get to the safe.
Access to the vaults at palisade bank is through the garage.
There is a vent you go through at the garage to go down to the vaults.
Bottom vault is the Picus Vault.