Friedberg 1200am. 1922 $50 Mule Gold Certificate. PMG Choice Uncirculated 64. John Burke back plate #14 is displayed just right of center in the field of this wonderfully preserved 1922 $50 Gold Certificate. The same back plate was used on earlier $50 Gold Certificates of the Series of 1913. This variety has the small format serial numbers. This example displays bright paper surfaces, broad margins and exceptionally well printed design elements. This is the single finest example of the variety graded by PMG.The Series of 1922 notes have an inscription, not present on the earlier issues, in the left field, "THIS CERTIFICATE IS A LEGAL TENDER / IN THE AMOUNT THEREOF IN PAYMENT OF ALL / DEBTS AND DUES, PUBLIC AND PRIVATE / ACTS OF MARCH 14, 1900, AS AMENDED / ON DECEMBER 24, 1919." The back is the same design as the preceding type. As the orange-gold color tended to fade, notes with bright backs are worth more than those with faded color, regardless of the grade.The print run of this variety was 5,184,000. The surviving population is in the hundreds, with most showing circulation and fading.