I used a black paint pen to hide marks a friend left on his scope when he used a pair of pliers to loosen the locking ring on the eye piece. He was happy with it but I would not try to hide marks on a scope I was trying to sell.
"The only thing necessary for the triumph of evil is for good men to do nothing." Edmund Burke 1795
"Give me liberty or give me death" Patrick Henry 1775
to loosen the locking ring on the eye piece. He was happy with it but I would not try to hide marks on a scope I was trying to sell.