If the barrels were replaced at the factory and serial numbered to the gun, it is still a $12,000 gun in 70% condition. This gun looks in a higher percentage from what is shown, more pictures of forend and stock would help.
If this was sent back later to have the barrels replaced with another set, then there is usually a 2 stamped on the barrels for-end hanger, and would usually have a spare for-end also stamped with a 2.
An extra set of barrels at the time the gun was made were half the price of the gun.
From a 1923 Parts and Repair list, extra set of barrels for Eagle E, Pigeon E and 4E were $102.00, and $25.00 for the forend complete.
As for the colors, after all this time at least it still has them.
From what I can see of the one side plate connecting screw, this gun wasn't tampered with much and if the locks were removed it was by someone with experience.
