i don't doubt that isaia made stuff for daniel cremieux. but i will send you $5 paypal if that isn't a hartmarx jacket. can't imagine why isaia would go to the trouble of making the internal stitching look juuuuust like hartmarx internal stitching.
either way, DC w/ LP 160s fabric is nice. but based on that pic (and without having seen the maker tag, a picture of which can easily prove me wrong and make you $5 richer), i think that particular jacket is hartmarx-made, not isaia.
Nah it's made in italy and the RN number is for Dillards, has hartmarx ever made any suits in italy? All the Daniel cremieux non signature stuff i've seen has been a mix between jack victor made in canada stuff and hartmarx made in USA stuff. But yeah, it's not made to mainline Isaia standards, only half canvass, but nicer than say Polo Blue Label which is also half canvassed at least the Italian stuff made by corneliani is.