It appears to be a 'NIKA FOLLIS' modern reproduction. But I certainly can't be sure. See this page:

https://www.vcoins.com/en/stores/aegean_numismatics/1/product/byzantine_empire_constans_ii_641668_follis/1065241/Default.aspx

This genuine one sold for $383 US dollars. Description:

ISLAMIC, Time of the Rashidun. Pseudo-Byzantine types. Fals (Bronze, 21 mm, 3.65 g, 4 h), imitating the EN T૪TO NIKA follis of Constans II, uncertain mint, circa 19-39 AH / 641-660 AD. Imperial figure standing facing, wearing crown surmounted by cross, holding long cross in his right hand and globus cruciger in his left; in left field, N/K/Є downwards; in right field, o/K/A/I; above, crescent. Rev. Large m flanked by A/Ч and A/N/o; above, pellet-star-crescent (?); in exergue, mN. Album 3504. ...