The engine's "master" ID plate. It had peeled off about half-way; I had to
straighten it out and push the left-hand side of it back up against the engine
before I took this picture.
Part name: Rocket Engine Assembly
Contract No.: NAS8-5604
Part No.: 104001
Spec. No.: R-1420eS [probably; it's somewhat difficult to read]
Stock No.: [blank]
Serial No.: F-4023
Note that I've rotated this photo counter-clockwise with respect to how it's
mounted on the engine.