dsc67056.jpg

Paperwork taped to the aft end of the engine's dolly. Note the red thrust chamber exit cover (with the stylized white Rocketdyne "R") behind the railing on the dolly.

The paperwork reads

Engine
#1

P/N	S/N	Nom.	Condition
[first characters unintelligible, but presumably]9024460-11	8801414	Support Elect.	Good 1 ea.
[first characters unintelligible, but presumably]4064/MOZ	J-1026	Eng. Handler	Good 1 ea.
[first characters unintelligible, but presumably]103826	J-2146	J-2 Engine	Good 1 ea.
[first characters unintelligible, but presumably]9020628-51	8800265	Support Fluid	Good 1 ea.
19-9020629	78	J-2 Eng. Cover	Good 1 ea.

Although this paperwork indicates that the J-2 engine's serial number is J-2146, and the thrust chamber ID plate indicates that it is "Unit J-2113", it's actually J-2 engine J-2111.