Byzantium AV Histamenon ND Constantinople Mint Constantine IX Monomachus 1042-55 Another common coin. Some exs exist with two starbursts either side of Emperor/ these were struck in 1054 the year of a Super Novae!
Sulayhids Queen Arwa bint Ahmad AH 484-532 AV Half Dinar AH 487 (1094-5AD) Dhu Jibla Mint Got this MS coin for under $200 bucks!
Ikhshidids/ Egypt-Syria AV Dinar AH342 (972AD) Misr Mint Caliph Abu'l-Qasim Unajar AH334-49 This belongs 900-999AD
Finally I am able to post something, though it is mounted on a pin (can be easily removed but it was a gift from my father so I'll leave it as is) John II Comnenus Ducas, AU (or EL?) Hyperpyron Constantinople, first coinage, ca. 1118 - 1122 30.6 mm, aprox. 4.23 g Nomisma DOC IV-1a.2; CLBC I 3.1.1; Morrisson BnF 1 ff; Wroth BMC 10; Ratto 2094; Grierson 1064; Sommer 60.1; Sear 1938; SB 1938 Ob.: Christ seated facing on backless throne with 3 pellets on each arm, wearing nimbus cruciger, pallium and colobium, raising right hand in benediction, book of Gospels with five pellets on cover cradled on left arm; IC-XC-barred - (Jesus Christ), flanking head; double border Rev.: half-length figures of Virgin on right and John II Comnenus with beard on left, together holding a patriarchal cross. Virgin nimbate with pallium and maphorium, and John wearing crown, loros and akakia, manus Dei above emerging from cloud; around +IΩ ∆EXΠOTH − Θς -barred - at right MHP barred
And a Friedrich I, also known as Frederick Brabarossa, AR Bracteate in very bad shape with part of the legend missing... Imperial mint Altenburg, 1152 - 1190 0.764 g Sammlung (Slg.) Bonhoff 1185; Slg. A. - Fd. Seega 526 Var.; Slg. Löbbecke 697; F. Erfurt 58 var; Gotha 329; Belfort 1173 Emperor on throne holding lis-headed scepter and imperial orb. Crescent left of the head; (FRIDERICVS•) IMPERATOR•ET•SEMP•AV