In most other collections, whether numismatic, phylatelic, etc. any error increases the value of an item. How much? Depends on the rarity.
However, it seems that "chipping", and Playoy collecting is still too young, as we do not pay much attention to variations, much less to errors (Eg. AC-1 One white eye). I believe that as "chipping" matures, specially in Playboy, where is not too hard to complete the collection,
errors and variations will increase in value like in any other type of collecting. So, hold on to those different little chips.Who knows?