This is a wide open question    but more related to scarcer coins as with common ones the answer would be obvious.
 
	If a coin was scarce /rare and one was higher grade but had problems verd,cleaned,corrosion etc.
 
	Would you buy that one or for a similar price , lesser grade but problem free. 
	 
 
	I only buy pennies but the question relates to any coin.
 
	Pete.