 Subsequently, a third issue of stamps with similar designs and some variations as the second issue but with distinctive colors assigned to the various denominations was released between 1871 and 1872.Production of the third issue employed many of the same printing plates, engraved by J.R. Carpenter of Philadelphia, and were printed on the same special "chameleon" paper with silk fibers used in the printing of the second issue, with perf' 12 .Unlike many of the stamps in the second issue, the third issue does not designate any duty type in the stamp designs.