Model/Name:Les Paul Korea 

WVC vintage covered humbucking (Made in Korea)
#0071 WVC-N(neck)
#0072 WVC-B(bridge)
COVER: CR, GD, NATURAL
A true classic. "Nickel silver" covers were discontinued on most humbuckers early in the 60's due to the difficulty in polishing and plating  this very expense material.
Brass was substitued and this is when guitarists noticed a deteriation in sound and started removing the covers to regain the high frequencies that brass tends to mask, giving the open coil look that we are familiar with today.
Nickel covers not only give superior tone, and more natural highs they shield noise better, and look great too!