Abstract
Since Van der Chijs published his pioneering work (1852) numerous studies and consequently additions and corrections have appeared (f.i. De Voogt, 1867; De Jonghe, 1874; Roest, 1874; Roest, 1893; Schulman, 1940; Van Gelder, 1980b). Thoma (2001) recently published an overview, but detailed studies are needed to establish a complete chronology of Gelrian medieval coinage. This paper is one such study, concentrating on the deniers of the counts Gerard IV (1207-1229) and Otto II (1229-1271). All of these were already listed in Van der Chijs (1852), who, however, could not provide a chronology. I draw on a variety of economic, historical and numismatic studies as well as several public and private collections for constructing such a chronology. In the course of doing so, some minor additions and corrections on Van der Chijs are made (see Benders(2002) for a similar paper on Gelrian sterlings).
