What quarter is rare?

So, let me get this straight - you're asking about which quarter is considered rare in the world of coins and collectibles? Is it a specific type of US quarter, perhaps one from a limited mintage or with a unique design? Or are we talking about quarters from other countries, where rarity may be determined by factors like historical significance, minting errors, or simply low production numbers? Either way, I'm curious to know - what specific quarter are you referring to as being rare?