Officially since 1980, the reverse side of the flag was a plain red field without the hammer and sickle. In practice however, this was very commonly disregarded by flag makers as it was far easier and less costly to simply print the flag through and through, with the obverse design mirrored on the reverse. It was also common to see the reverse of the flag bear the hammer and sickle in the obverse formation. An example of the flag demonstrating its "de jure" status as being only one-sided is that of the Soviet flag atop the Moscow Kremlin which bore the single-side official design.