I would consider an Alamo poster "rare" if I have only seen one example, or if I have never been able to come up with one. I have only seen one example of the Belgian Todd-AO poster (England), and will gladly pay top dollar for one. I have the
general release version (which does NOT say in Todd-AO). The rarest Alamo poster (for me at least) is the 1960/61 domestic six sheet...in either Todd-AO or general release version. I am not referring to the R67 six sheet, which I already have.
I will also offer top money for the aforementioned first issue six sheet. This is even rarer than the Icelandic Todd-AO program!!!