The gold of Firoz Shah is fairly common, and six types are known.
Following his predecessor’s example, he inscribed the name of the caliph on
the obverse, and his own name on the reverse. Firoz associated the name of
his son, Fath Khan, with his own on the coinage. Gold coins of subsequent
kings are exceedingly scarce; the shortage of silver is even more apparent.
Only three silver pieces of Firoz have ever come to light, but the copper coins
are abundant. The coinage of Firoz is given in the following tables:
Fractions of copper jital:
     1 adhi (billon)                              =    1/2 of a jital
     1 dangi (billon)                             =    1/4 of a jital
     or fulus (copper)
Multiples of copper jital:
     2 jitals                  =        dugani
     4 jitals                  =        chahargani
     6 jitals                  =        shashgani
     8 jitals                  =        hastigani
     10 jitals                 =        dehgani
     12 jitals                 =        dawazdahgani
     24 jitals                 =        nisfi
     25 jitals                 =        panjgani
     48 jitals                 =        tanka (silver)
    The coinage of the later rulers, though abounding in varieties, is almost
confined to copper and billon pieces. During the whole period, with but two
exceptions, one mint name appears, Delhi. The long reign of Firoz seems to
have established his coinage as a popular medium of exchange; and this
probably accounts for the prolonged series of his posthumous billon coins,
extending over a period of forty years. Some of these and of the posthumous
issues of his son, Muhammad, and of his grandson, Mahmud were struck by
Daulat Khan Lodhi and Khizr Khan. The coinage of the Lodhi family, despite
the difference in standard, bears a close resemblance to that of the Sharqi
kings of Jaunpur.