The Parthian Empire was an ancient empire located in what is now modern-day Iraq, Iran, and Turkey.
The empire lasted from BC 247 to AD 248. They fought many battles with the Romans.

Silver, 20 mm, 2.94 gm, Catalog: Sellwood 33
Struck: BC 95-90 Ecbatana (undated)
Obverse:
Head facing left with medium beard wearing tiara with horn in center
Reverse:
Archer seated right on throne, in right hand bow, Greek inscription
BAΣIΛEΩΣ MEΓAΛOY APΣAKOY AYTOKPATOPOΣ
ΘEOΠATOPOΣ NIKATOPOΣ ("[Of the] Great King, Arsaces...")

Silver, 18 mm, 3.92 gm, Catalog: Sellwood 31
Struck: BC 90-80 Rhagae (undated)
Obverse:
Head facing left with medium beard wearing tiara with eight pointed star in center
Reverse:
Archer seated right on throne, in right hand bow, Greek inscription
BAΣIΛEΩΣ MEΓAΛOY APΣAKOY AYTOKPATOPOΣ
ΦIΛOΠATOPOΣ
EΠIΦANOYΣ ΦIΛEΛΛHNOΣ
("[Of the] Great King, Arsaces, the Autocrat, the Father-loving, the Noble, the Greek-loving")

Silver, 21 mm, 3.19 gm, Catalog: Sellwood 31
Struck: BC 90-80 Rhagae (undated)
Obverse:
Head facing left with medium beard wearing tiara with eight pointed star in center
Reverse:
Archer seated right on throne, in right hand bow, Greek inscription

Silver, 21 mm, 3.64 gm, Catalog: Sellwood 63
Struck: AD 10-38 Ecbatana (undated)
Obverse:
Head facing left with medium square cut beard, wearing diadem with loop at top,
hair almost straight, earring visible, border of dots
Reverse:
Archer, seated right on throne, in right hand, bow, Greek inscription
BAΣIΛEΩΣ APΣAKOY EYEPΓETOY ΔIKAIOΣ
EΠIΦANOYΣ ΦIΛEΛΛHNOΣ

Silver, 19 mm, 2.41 gm, Catalog: Sellwood 63
Same as above but clipped

Silver, 21 mm, 3.66 gm, Catalog: Sellwood 67.1
Struck: AD 51 Ecbatana (undated)
Obverse:
Helmeted head facing front with short beard wearing diadem with loops at both sides
Royal wart on forehead, six-pointed stars at each side, border of dots
Reverse:
Archer seated right on throne, in right hand bow, below bow monogram
Blundered Greek legend

Silver, 21 mm, 3.82 gm, Catalog: Sellwood 78
Struck: AD 105-147 Ecbatana (undated)
Obverse:
Head facing left with pointed beard, wearing diadem with loop at top and earring, border of dots
Reverse:
Archer seated right on throne holding bow, blundered Greek legend
Greek legend reads something like this:
BAΣIΛEΩΣ BAΣIΛEΩN APΣAKOY
OΛAΓAΣOY ΔIKAIOY
EΠIΦANOYΣ ΦIΛEΛΛHNOΣ