In the past, several different varieties of coins were included under the South Ferriby Type. All had a highly stylized horse on the reverse, with variations in the ornaments in the field. The series is one of bewildering complexity and to make it more understandable, the term "South Ferriby Type" is now limited to only one variety, number 811. The other varieties have been renamed, basically according to the field ornaments.
The ornaments above the horse include variations of an anchor-like object; a rectangle with dots, which is now called a domino; and a lozenge-shaped box with pellets, which is now called a kite. Below the horse appear a six- or eight-pointed star, a wavy-armed star, a sunflower, or a spiral. The upper portions of the horse's front legs are either made up of a single line (the normal type); or two lines, either both straight, or one straight and one curved.
To add to the complexity, the obverse dies were often used until they were almost completely obliterated, yielding almost-uniface varieties. Coins made of bronze cores wrapped in gold foil are known for many types and the dies from which they were struck are competently engraved.
Consequently, when all these variations are combined, a tremendous number of types may be postulated. Many of these are not known to exist today; but many do, and others will probably appear in the future. Consequently, the following catalogue section has been constructed to accommodate the potential varieties. The accompanying table gives the catalogue numbers and descriptions, along with an indication of those types known to exist today.
The Iceni occupied the area that is today Norfolk, Suffolk and parts of Cambridgeshire. Until the time of the Gallic War, the tribe seems economically isolated. Large Flan, Defaced Die and Abstract Design Type staters are not commonly found in Icenian territory, and presumably few were imported. Locally-made coins, the NORFOLK WOLF TYPE staters and BURY TYPE silver, were first produced late in the Gallic War. The earliest Icenian gold coinage comprises gold staters with the abstracted head of Apollo on the obverse and a disjointed wolf on the reverse. The heavy weight indicates the series began some time around the end of the war. After the war, the coins become quite debased and bronze cores of plated staters occur with some frequency. Later, a small coinage of SNETTISHAM TYPE coins were struck in gold and silver.
Apparently, extensive trading contacts developed during the war with the Trinovantes/Catuvellauni. A small number of Gallic War Type staters are found and uninscribed staters of the Trinovantes/Catuvellauni also appear. After the war, the coins of Addedomaros and Tasciovanus circulated. It is possible the Iceni relied on these imports instead of striking their own gold in volume.
About 20 B.C., the gold content of the Icenian coinage was restored with the introduction of the FRECKENHAM TYPE. Staters and quarters were struck lighter in weight to conform with the coinages of the other British tribes. The staters had a flower pattern or cross of pellets on the obverse and a Celticized horse on the reverse. Three major types occurred, described either as EARLIER and LATER, based on style and the progressive damage to one particular die linked with several others. Since all three types occurred in the Freckenham Hoard, it is likely they were contemporary.
After the war an extensive Icenian silver coinage was produced, which probably continued up to the time of the Boudiccan Rebellion. Silver units were produced to a standard weight of 1.25g. for nearly 100 years, a remarkable economic and technological achievement. There was a bewildering succession of types, subtypes and minor die varieties. These varieties have been systematically analyzed by John Talbot, and the arrangement is now reasonably certain. It appears that in any given period, three separate kinds of silver were being struck. Talbot suggests that the main Icenian mint either had two branch mints, or alternatively three workshops within a single mint. It is also possible that the different kinds of silver were either produced for different purposes, or perhaps at different times within a given period. Generally, the absolute chronology needs additional work. The chronology used here makes use of the work reported in John Talbot and Ian Leins's 2010 paper in The British Numismatic Journal.
The FRECKENHAM TYPE disappeared by 20 A.D. and the uninscribed silver coins were superseded by the dynastic. Very few inscribed gold coins are known. It is possible the gold coinage was minimal and the Iceni used silver coins augmented with Trinovantian/Catuvellaunian gold after 20 A.D. The Icenian dynastic period is largely one of a prolific silver coinage, beginning with the addition of an inscriptions to the CRESCENT TYPE and the introduction of the EMBLEM TYPE.
Most of the major types are listed here, but some of the minor issues need to be added. The dating of the various issues is controversial and that offered is somewhat arbitrary, based on die studies, typological sequences and analyses of coin hoards deposited around the rebellion of 61 A.D.