However, my mystery is about a report in Aviation Week Magazine, a semi-oficial publication of the USA military-industrial complex, as some name it, 3 years before Sputnik 1, where no satellite except the Moon should be in orbit around the Earth.

There is a natural explanation, but it is not the one given. The Earth has one natural Moon, not two or three as stated.

Just like the other mystery satellites, the only award for guessing the right solution is a mention here on my page.

The reference is: Aviation Week Magazine, p. 12, August 23, 1954 (Nineteen Fifty Four) right hand column. The heading is "Satellite Scare".

The entry states that the Pentagon Sources happily announces that the two objects in orbit around the Earth, one in 400 miles orbit, the other in 600 miles orbit, are not Soviet.

Apparently they asked dr. Lincoln la Paz of University of New Mexico, a known meteorites expert (publiced as late as 1969), if the two objects observed were soviet or not.

And when they found out they were not from Soviet Union, they publiced (no government secrecy) this statement to calm down the public, the communist had not managed to launch satellites yet.

Cause they were not coming from Soviet Union. Probably the orbit was wrong.

Anyway, the Soviets only tested the rocket they launched satellites on in 1956, so they didn't have that rocket two years earlier. According to Spaceflight Magazine of the British Interplanetary Society, they were working on integrating the engine section in 1954 (or 1955 ?), so it weren't ready.
 

The entry is scanned in as fig. 1, the page as fig. 2 and the front page is fig. 3.

The text reads: