I just found out the significance of the dragon priest masks but the problem is i sold one and cant get it back from whom i sold it to so im wondering if there is any way i can get the mask again?

I was reading a topic with a guy with the same problem of your's.If you are playng on Ps3 or xbox 360,nope u can't get it back.Otherwise if you are playng on the pc you can use console commands to get it back.
Good luck bro.

My guess is you could use the console to give you the item?

if you are on pc just use the console commands to get it, help "name of the mask" 4 and then player.additem maskid 1, but the last mask that u get isnt really worth all the trouble so u dont miss nothing special if u dont collect them all

Why would you sell one?