It is without a doubt, a Regina America headset and yes, made by Ofmega. The RD in an earlier tread was proven to be an Ofmega and I saw somewhere a casting mark on one of the components that reads 'Ofmega Italy' (I think t was the crank. I have a full groupset packed away but it doesn't include that headset. The Ofmga branded version sells for around $35 and I'd love to have the one we're discussing. PM me

Danny