Is it common?

As I stated in my intoruction to the board last week, I am new and I apologize for the numerous idotic questions I may bring up, but is it common to recieve a psa graded card and have the card inside a plastic sleeve within the psa holder. I have never seen a sleeve before and I just recieved a card today from a common psa7 from an auction and the sleeve is the most obvious part of the card. Also I would like to thank all of you who reponded to my first thread; your answers and suggestions were very helpful.
Nolie
Nolie
0
Comments
Thanks. I never came across them and I don't know if I am happy that I was not unaware of this when I bought the lot. It is my fault for not picking it up on the scan. Are they difficult to trade/sell if they have the sleeve? I am not sure if people are too fond of that.
WTB: 2001 Leaf Rookies & Stars Longevity: Ryan Jensen #/25