There's some separation on the Tessar 45 on my ZI Contaflex II. Mr. Jon Goodman who frequently makes wry (and quite funny) comments on these forums, and who used to repair Contaflexes et. al, said that lens-separation is pretty common among these models.
Are you sure that it isn't coating damage rather than lens separation? I'm looking at the manual for the Contaflex II and it shows a normal Tessar, with a cemented lens group in the rear, not in the front.