This is called ASAT camouflage. It is 100% commercial. As the label says, this was marketed by a large catalog company called Brigade Quartermaster (still very much in business). Here is a link to the trademark holders of this pattern:
Supposedly the US Army did test this pattern in the early 1980s, I think, but I don't think it was anything special and definitely not widespread. This piece is made from ripstop which I'm sure is more recent.
Interesting information about Peru! Special Forces, of course, often purchase commercial patterns for their use. I wonder if there is any way to determine if an item is really from Peru's use or from a hunter. Different tags, features, cloth, etc.
Yes, it is ASAT (All Season All Terrain) camouflage in the Tan variant. ASAT no longer make BDU jackets and the slight “gap” in the pattern as seen on the back, on the right hand side, was later closed. ASAT used to make a Gray variant with a grey background, and brick reddish brown coloured limb shapes instead of yellowish brown coloured limb shapes.