GREAT MONGOLS: Möngke, 1251-1260, AV dinar (5.05g) (Marw), ND, A-V1977, Zeno-164159 (same reverse die), legend al-'adil / al-a'zam / mongu khan within plain circle // al-mulku lillah / wa muhammad r- / -asuluhu salla / Allah 'alayhi, all within dotted square, about 30% flat strike, appears to be the second reported specimen of this type, but with a totally different obverse die, crude VF, RR.
Estimate: 300-400 USD