Crypto BitCoin (BTC) is digital and virtual. The symbols or graphics are artist's rendition of the "coin" which has no physical form.

The coin, actually is a "round" not a coin, is an artist's rendition of what BitCoin (BTC) might have looked like - it's silver and it's art.

WHAT IS A COIN?
A coin is round… but it is not a round. It has two important attributes that distinguish it from a round:

• A coin is minted by a sovereign government.
• A coin is legal tender with a minimum face value.
  
  Typically, government treasury issued mint coins are intended to circulate within the public as currency, so the coins are given a face value that can be used during financial transactions. The actual coin value, however, can differ from its minted face value.

Source: https://www.apmex.com/education/investing/what-is-the-difference-between-a-coin-and-a-round