The seven stars are found more often than any other number in the crescent moon and stars iconography. It is sometimes said that they represent the five planets, Jupiter, Saturn, Mars, Venus and Mercury ,those were the planets that the ancient Romans known in classical times, plus the sun and the moon represented during and eclipse. This combination of images alone would justify the attribution of amulet, given to this iconography.
The Emperor Hadrian probably experienced two solar eclipses during his life; one shortly after the death of Nerva on
March 21, 98 CE and another on Sept. 3, 118 CE. It does not take a stretch of the imagination to see a correlation between Hadrian’s denarii and eclipses. If the crescent represents the sun, and the star the moon, the star within the crescent makes sense. It may represent a partial eclipse or a total eclipse nearing totality. The star in the crescent can represents the “diamond ring effect”. The Power of this image alone can be used for celebrating the fact that the eclipse failed to destroy
the sun and things were back to normal. Given the Roman proclivity for propaganda, this also makes sense: “The emperor saw us through another trial”. So, this image of the crescent with stars can alone represent the power of the God Emperor.