Tam
i remember that ring and crankset beign one of my early items for sale.It was nos,i found it at Montelatici shop,Probably it was on gonna be mount ed on on eof his bikes,I ve scored it along with a Monte panto stem that i sold to MR.Stevan Thomas.Very similar to the masi ones.I also seen the marnati panto rings,but u can tel l that those are MArnati becuz the "M" is flatter.
Matteo Brandi Firenze Italia