C23 Carmine/Ultramarine Centerline block of 4 XF original gum never hinged scarce with nice color! #454 , Huntington Beach, Ca 92648. Best offer info : Due to the high number of low offers only ONE best offer per item per customer will be considered. The item "C23 carm/ultramarine centerline block XF OG never hinged nice color! See pic" is in sale since Friday, August 16, 2019.This item is in the category "Stamps\United States\Back of Book\Air Mail". The seller is "ovstamps" and is located in Huntington Beach, California. This item can be shipped worldwide.