Chalkon

Orthe was a minor Thessalian polis of contested location — ancient sources place it somewhere in the Pelasgiotis region, but its precise site has never been conclusively identified archaeologically. That obscurity is reflected in the extreme rarity of its coinage; the BCD collection, which represents the most systematically assembled Thessalian numismatic corpus ever offered at auction, yielded only a handful of attributable Orthean pieces. Rogers knew the type only by comparison, hence the "cf." qualification against his 423.