http://www.coinweek.com/us-coins/condition-rarity-vs-absolute-rarity-in-coin-collecting/ So, the question for discussion: how do you approach rarity in your collection? Do you seek out conditional rarities, or do you look for absolute rarity (without regard to grade). Or, like Doug Winter, do you seek the rarest dates in the rarest grades? Seeking out absolute or conditional rarity can be somewhat harder depending on the confines of your collecting goals. If you are doing a date set, you'll get the rare coins as well as the common coins. If you, however, are buying "what you like, when you like it," with no traditionally defined set, that means you can chase rarity when you want. So, does rarity play a factor in your collecting approach at all? For me, as a collector of prooflike coinage, I can say that I am squarely in the realm of "conditional" rarities (the condition here being PL, not so much "numerical grade.") I don't necessarily seek out low mintage or rare dates - I chase the mirrors. I appreciate absolute rarity, but the goal of my set is not such.