Which sentence uses a simile?

 - The cat's silver eyes were like two shiny coins.
 - The cat's silver eyes were two shiny coins.
This sentence uses a simile:
The cat's silver eyes were like two shiny coins.
The words eyes and coins are compared using the word like.
This sentence uses a metaphor:
The cat's silver eyes were two shiny coins.
The words eyes and coins are compared without the word like or as.