Hi folks. This is my first post and I ave a question about pickups. I have a second hand Korean Epi SG made at the Unsung plant in 2004. When I inspected the pickups I was surprised to see "Gibson USA" stamped on the reverse. They even have the classic braided wire - see photo. Were these pickups included as standard with this model, or are they replacements of the original stock humbuckers? Thanks for any help.