Confederate States of America 10-Cent Blue Portrait Stamp Block of Four

This philatelic item is a block of four 10-cent blue postage stamps issued by the Confederate States of America, likely the Scott #11 or #12 design from circa 1863, featuring the profile of Jefferson Davis. The stamps are printed in a faded blue or slate-blue ink on off-white paper. This specific set comprises a vertical 2x2 configuration seated on a larger piece of paper with visible cursive script at the bottom, suggesting they may be 'on cover' or attached to an original document. The edges of the paper show significant wear, including irregular tearing, fraying, and a notable notch on the right side. The stamps appear to be imperforate or roughly separated, typical of mid-19th-century Confederate issues produced under wartime shortages. There are no visible cancellations, suggesting these may be unused or 'mint' examples, though the overall foxing and toning of the paper indicate significant age. Such blocks are prized by collectors of Civil War postal history for their assembly and the historical narrative of the Archer & Daly engravings during the Southern secession.