ornaments contain mostly buckle and circle motifs, most with a circular central buckle surrounded by up to six concentric circles. One of the bands is distinctive: It is decorated with a row of recumbent crescents, each atop an almond- or eye-shaped symbol. The point of the cone is embellished with an eight-spoke star on a background of decorative punches. An overview of the type and number of stamps used in the ornamental zones is shown on the right. The meeting of the shaft with the foot is taken up by a wide vertically ribbed band. The foot is decorated with similar motifs to the cone itself. Near the reinforcing bronze band, it turns into a brim, also decorated with disk-shaped symbols. Calendar Modern scholarship has demonstrated that the ornamentation of the gold leaf cones of the Schifferstadt type, to which the Berlin example belongs, represent systematic sequences in terms of number and types of ornaments per band. A detailed study of the Berlin example, which is the only one fully preserved, showed that the symbols probably represent a lunisolar calendar. The object would have permitted the determination of dates or periods in both lunar and solar calendars. The functions discovered so far would permit the counting of temporal units of up 57 months. A simple multiplication of such values would also permit the calculation of longer periods, such as metonic cycles. Each symbol, or each ring of a symbol, represents a single day. Apart from ornament bands incorporating differing numbers of rings there are special symbols and zones in intercalary areas, which would have had to be added to or subtracted from the periods in question. The system of this mathematical function incorporated into the artistic ornamentation has not been fully deciphered so far, but a schematic understanding of the Berlin Golden Hat and the periods it delimits has been achieved. In principle, starting with zone , a sum is achieved by adding a relevant contiguous number of neighbouring sections: . To reach the equivalent lunar or solar value, from this initial sum must be subtracted the sum of symbols from the intercalary zone(s) within the area counted. The illustration depicts the solar representation on the left and the lunar one on the right. The red or blue fields in Zones 5, 7, 16, and 17 are intercalary zones. The values in the individual fields are reached by multiplying the