 This paper proposes a scientific reference model, SRM, as a documented and published basic model for hypothetical 3D reconstruction of no longer existing or unrealized architecture. This structured SRM provides essential information about the object, its components, its credibility or extent of hypothesis and copyright. It also serves as a findable referential result of a scholarly investigation of a physical object that no longer exists. This article was authored by P. Korochinsky, F. I. Apollonio, I. P. Bejina and others.