An analysis of weight/size data shows that there are serious flaws in a recently presented chronology for 2nd century bronze coinage

 

The graphing of the data from F&L's “Table of Hoards” occurs when the consecutive average weights from the listing are placed in each of seven horizontal positions from left to right (seven sub-series labelled 6a, 6b, 6c, 6d, 6e, 7a, and 7b). The verticle positions of the coins in the graph are based on factual data (the weights from 2g to 40g); the horizontal positions (6a to 7b) are hypothetical. It is the order of the weights in F&L's Table of Hoards listing that creates F&L Table 2. Although the Zeus-Ammon / double-eagle hypothesis was applied in the listing, it was not mentioned how the "proper" sequence in the list was obtained from hoards. F&L state that “the types must have been critical for recognizing the various denominations” and “The following table [F&L Table 2] takes account of obverse types only”.	F&L Table 2. Proposed subdivisions of Series 6 WEIGHT 6a 6b 6c 6d 6e 7a 7b 38-40g LH-Ammon Sv1423 Ammon Sv1423            30g Isis   Sv1491 Isis Sv1233 Ammon Sv1424A         22-24g       Ammon Sv1375 Ammon Herakleion Ammon Sv1380 Ammon Sv1383 17-20g Heracles Sv1497,1492       Isis Sv1234     15g Alexandria Sv1493           Isis Sv1384 11g     Heracles Sv1494 Heracles Sv1376     Heracles Sv1385 8-9g     Alexandria Sv1495   Alexandria Sv1236     6-7g Isis   Sv1154 Ammon Sv1173 Ammon Necropolis Ammon Sv1377   Alexandria Sv1381 Alexandria Sv1386 4-5g Heracles Sv1496 Helmented bust Sv1155   Nilus? Sv1378 Isis Sv1238 Isis Sv1232 Isis Sv1287 2.4-3g       Helmented bust Sv1379 Helmented head Sv1156     2g     Athena Sv1195	The Ammon coins at the top of each column in F&L Table 2 show weight reductions for the Zeus-Ammon / double-eagle type, i.e., there are reductions from 6b to 6c and then to 6d. Within the various columns from left to right there are similar reductions in weight for each of the types Isis, Heracles, Alexandria, and Helmeted bust.     These weight differences are interpreted by F&L as “piecemeal” weight reductions of coins with the same obverse type representing the same denomination during various progressive periods from c.204 to 116 BC. However, F&L Table 2 can, and should, be interpreted in a very different way (click below).
CLICK HERE   to see that F&L Table 2 does not fit the hypothesis of obverse marking nor reduced weights for the same denomination