Marcian, AE4, August 24, 450-January 31 (?), 457, Constantinople
D N MARCIANVS P F AVG
Pearl-diademed, draped, cuirassed bust right
Monogram #3 variant
M with slanted serif up and down on left leg, horizontal serif on right lower leg, connected with R at right with wide serif, S in bottom margin all in laurel wreath
CON in exergue, breaking wreath
9mm x 11mm, 0.76g
RIC X, --

Note: RIC does not attest any examples for monogram 3 for Marcian from Constantinople and lists all Constantinople types as within wreath (unbroken)