PERU 1921 SAN MARTIN 1c brown & red INVERTED CENTER Sc# 222a mint MH VF centering - very RARE only 100 stamps with inverted center (1 sheet) issued by mistake. Please be sure to check my other listings!The item "PERU 1921 SAN MARTIN 1c brown & red INVERTED CENTER Sc# 222a mint MH VF -RARE" is in sale since Wednesday, February 15, 2017. This item is in the category "Stamps\Latin America\Peru". The seller is "s_faria" and is located in Portugal. This item can be shipped worldwide.