Perez 30c brown DOUBLE OVERPRINT one INVERTED Sc# C18a mint MH Only one sheet of 100 was printed showing this ERROR. Please be sure to check my other listings! The item "CHILE 1928 AIRMAIL J. Perez 30c brown DOUBLE OVPT one INVERTED Sc# C18a mint MH" is in sale since Tuesday, December 05, 2017. This item is in the category "Stamps\Latin America\Chile".The seller is "s_faria" and is located in Portugal. This item can be shipped worldwide.