1918.] Numismatic Supplement No. XXX1I. 373 
are no gold coins. The denominations in silver are :— 
tetradrachme, drachme, triobol, diobol and obol. The last 
three are very scarce and do not seem to have been minted 
after Orodes I (B.C. 57-37). The denomination or normal 
value of the bronze pieces are not known. 
Wroth has come to the conclusion that some modifications 
must be made in the accepted arrangement of the coins 
e 
seemed necessary are principally in the period before Phraates 
IV (B.C. 38/7-3/2) and in a paper “On the Re-arrange- 
ment of Parthian Coinage” published in the Numismatic 
Chronicle for 1900 (pp. 181-202) he has criticized the existing 
arrangement. He has indicated an alternative scheme. 
which with various modifications and corrections, has been 
adopted in the British Museum Catalogue. The arrangement 
of Parthian coins presents exceptional difficulties ; the principal 
being the absence of the names of most of the kings on 
coins. It has not vet been possible to compile with cer- 
tainty the list of Parthian kings and to determine with 
precision the limits of their reigns. It must not be assumed 
that the kings followed one another in natural sequence, 
because we have to make allowances for the possibility of 
contemporaneous reigns as well as the rise of usurpers and 
rival rulers. The dated coins bear testimony to these facts 
mint city itself. The reverse types of the bronze coins are 
extremely varied. 
. The earlier types exhibit higher artistic merit and the 
{scriptions are written with far greater clearness and correct- 
@ city can be read to the last. : oe 
e rude conquerors, having no civilization of their own, 
