Philip I Philadelphus, 95-94 BC or 76-75 BC. AR attic weight 
tetradrachm, 15.5 g, 26.53 mm, Antioch ad Orontem mint. 

Obv: Diademed head of Philip right. 
Rev: BASILEWS FILIPPOU EPIFANOUS FILADELFOU to right and left 
of Zeus seated left, holding Nike and sceptre. YNAT monogram in 
lower left field, DI monogram between two laurel branches in 
exergue.

Hoover 1319; BMC 8; Newell 8 in NC 1919; Hunter 13; Rhousopoulos 4479.
Note: In Num. Chron. 1919, pp 69 ff, Newell writes about 
coins with this monogram and suggests that the monogram
could denote AYTONOMOS and may have been struck in Antioch 
under the Romans. It's an interesting article with numerous 
other Seleukid varieties not in his SMA work.

With permission of TimeLine Auctions (www.timelineauctions.com), August, 2013