Neandria, Troas. AR 7 mm hemiobol, ca. 450 BC. 0.3 g. 

Crested Corinthian helmet left, coiled serpent on the bowl.
T on Amphora within dotted square all within incuse square. 

wwxls AR10488. Unpublished with T on the amphora.
Leu Numismatik AG Auction 4, Lot 370. 

With permission of Leu Numismatik AG - Web Auction 4, Lot 370, June 2018

wwxls refers to wildwind's own greatly extended xls database  (Isegrim_allfiles.xls) of coins of Asia Minor on the wildwinds server) of the old Isegrim database. A wwxls number is used for unpublished coins and e.g. unpublished coins in RPC without a permanent number.