This one is not in RIC, but other examples are known
seller's description
"23mm FOLLIS of CONSTANTINE 1. 317-337 4.1 grams Obv; CONSTANTINVSPAVG. Laur Cuir Right REV; PRINCIPI IVVENTVTIS, Prince standing right in military dress, holding spear and globe. Year 317. / * PLN = Mint of LONDON RIC VII; Before 222 Huvelin 121"