Pyramid Acoustic Guitar Strings Hand-Polished Light 12-54

I have purchased 10 sets of these strings thinking that it would save me some money in the next few years. However, some of the strings are rusted from the very beginning. ( I opened two sets now, one set is rusted and the string lose its brightness in two weeks) It is a GOOD sounding strings and it gave you a balanced sound on both of my om guitar and piccolo guitar. If the set is mint when it is opened, it maybe the case that it will sustain a longer period

I bought these expecting that someday the last set might lose their brilliance. It’s not happening. Get this, the higher price German strings have lowered my string costs. Are you listening??