This article deals with the symbolic and material formation of an authenticated register of Övdalsk – a Scandinavian local language – unfolding in a situated engagement with grammatical artefacts. Seeking to refine the often underspecified category of the indexically ‘pre-shift,’ ‘traditional,’ ‘old’ or, in some other way, temporally authenticated register, it intercalates an analysis of linguistic exchanges with histories of production of authoritative discourse. Through a stepwise analysis of the production of metapragmatic discourse, it explores the indexically presupposing and entailing relationship between artefactual objectivation and novel registers of language. Thus examining the enregistering interpretation of genred regimentations of language-as-form, it argues that such focus is apt for creating a reflexive and less essentializing understanding of linguistic authenticity.