1914-P Barber 50 Half Dollar ANACS MS58 (altered surfaces?)

This is a 1914-P Barber Half Dollar graded MS58 by ANACS. Very low mintage and one of the key Barber half dollars. It states the coin has altered surfaces. I do not know what altered surfaces is. If someone can describe it to me, I will add the description to this listing. What appears to be scratches on the obverse is in the plastic case and not the coin. The coin is very detailed and has been stored in my lock box for about 40 years. This is a nice coin and if you have any questions, please contact me via Ebay. The coin is returnable if you are not satisfied as long as it is in it's original holder and untampered. I ship by Priority Mail unless you desire something else. Thanks for looking.