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The engine's ID plate, located on the LOX dome. It reads

Rocketdyne
A division of
North American Aviation, Inc.
Canoga Park, Calif.

Part Name: Thrust Chamber
Part No.: 6072124
Contract No.: 5525
Model No.: A-7
Stock No.: [blank]
Wt.: [blank]
Insp: [inspector's stamp]
Serial No.: [first digit(s) mostly unintelligible, but perhaps] 6005