In March, Bezos revealed that his team had raised the parts for at least two F-1 engines, but they didn't know if they were from Apollo 11 or one of the 12 other Saturn V rockets that flew between 1967 and 1973, each equipped with five of the engines.
"There was one secret that the ocean didn't give up easily: mission identification," Bezos wrote on his website. "The components' fiery end and heavy corrosion from 43 years underwater removed or covered up most of the original serial numbers."
The job of identifying the heritage of the thrust chambers, gas generators, injectors, heat exchangers, turbines, fuel manifolds and dozens of other F-1 engine artifacts fell to the conservation team at the Kansas Cosmosphere and Space Center in Hutchinson, Kansas. In addition to their work cleaning and stabilizing the parts for public display, the conservators were tasked with meticulously inspecting and documenting each component.
"One of the conservators who was scanning the objects with a black light and a special lens filter has made a breakthrough discovery -- '2044' -- stenciled in black paint on the side of one of the massive thrust chambers," wrote Bezos. "2044 is the Rocketdyne serial number that correlates to NASA number 6044, which is the serial number for F-1 Engine #5 from Apollo 11."