H.G. Wells' Astounding Adventure in Dynamation!
Based on the HG Wells story. The world is delighted when a space craft containing a crew made up of the world's astronauts lands on the moon, they think for the first time. But the delight turns to shock when the astronauts discover an old British flag and a document declaring that the moon is taken for Queen Victoria proving that the astronauts were not the first men on the moon.