Indonesians are available as dry, semi-washed and (sometimes) fully-washed coffees. While a fully washed coffee may appear to have less defects, it may be inferior in the cup to a ugly, dry-processed coffee. (A recent Sumatra sample I cupped that was perfect & polished was probably the most flavorless, dull Mandheling I have ever had!) Dry processed, wild coffees will have more body and often more of the character that makes Indonesians so appealing and slightly funky: grading seems to often ignore percentage of weird looking beans.
picture taken from: here