This is a real Javan Vinegaroon (Thelyphonida)!
Native to Indonesia, these are also known as whip scorpions. Though they visually resemble scorpions, they are actually in the spider family (arachnids)!
They earned the name Vinegaroon from the fact that they can defensively excrete an acidic chemical with a vinegar-like odour.
These come framed in a ~4.25" wide riker and would make a great addition to any collection.