From the information I could gather about this livery, I've learned
the Livery was originally painted on the CH47A Trumpeter model and used for testing purposes. This might have been one of the first 5 chinooks to exist.

Thank you!
Luke_Aventino

Boeing test bird livery, one of the first 5 CH47A chinooks to exist. This is an adaptation of that livery for the CH47F model.