1979 S US Proof Set Superb Gem Uncirculated

I purchased this 1979 set in 2020, so the set at the time of the purchased is 41 years old. Delivery was fairly fast. The coins were deliver in a bubble wrap envelope and the the coin set was in a small plastic bag. I will proceed to do my review in sections as follows:OUTER PACKAGING: The coins came in a black cardboard box indicating they were a Proof set for 1979. The packaging was in great condition with the exception of some minor mark at the edges. Considering that is a cardboard and that the cardboard is 41 years old, it’s basically is in great condition.PLASTIC CASING: Plastic case was visually reviewed. The plastic case is composed of black and clear plastic with silver color markings. At plain sight there is no scratches, under magnifying glass there are some very small scratches and only in one small area. There are no pry mark indicating that the set was ever open. My assessment is that the plastic case is in great condition.COINS: Coins were visually reviewed. All coins correspond to the year of the set which is 1979. The mint mark for and every coin is an S for the San Francisco mint. The coins were reviewed under magnifying glass and the coin appeared to be uncirculated proof with no visible scratches. The one cent coin was found to have a small spot above the O and the N and other very small small spot at the Lincoln monument. Considering that the One cent coin was made out of 95% Copper and 5% Zinc during that time and once again the coins are 41 years, I believe is at best best.The coin set is great condition, very presentable. While I can not make an assessment on every coin set that the seller have, this one did exceed my expectation.