Bros. A Quick ? About PSA graded auto cards.
 

Aloha Everybody....I don't know a lot about graded cards (except that i like psa holders best). My Question I have the chance to trade for a couple of nice autographed cards..both psa..one says "Auth,Auto" the other a "Mint 9" ...both cards seem vg in cond and the mint 9 is crisp but the other is not bad. How do they psa/dna cards and what does dna Mean and the number grade? OK time for another Becks Dark. Aloha, dave.