Margaret
Thompson in "Coins for the Eleusinia" {Coins for the Eleusinia
Margaret
ThompsonHesperia: The Journal of the American School of
Classical Studies at
Athens,
Vol. 11, No. 3, The American Excavations in the
Athenian Agora: Twenty-Second Report (Jul. -
Sep., 1942), pp. 213-229 on Jstor (also on the internet) .
says about a UNIQUE
type that confuses the
obverse of one with a
reverse of another Svronos pl 103 no 40.
I have no Svronos!
But it could be valuable!
Remember that this article is 1942 and a lot has changed since then including her views on the
New Style coinage of
Athens, culminating in 1961, which generally
still stands except for the dating.
Cic
EDIT This is not the one. In the footnote it says
Triptolemus Obs But, Rev 2 Owls with a plemechoe between and A
(E).
Yours thus might truly be unique and if so needs publishing.
I have no Modern books , but see" NEW VARIETIES OF THE ELEUSINIAN TRIPTOLEMOS/PIGLET COINAGE FROM THE
BCD COLLECTION" for the footnotes on academia.edu for modern sources and discussions