In my view, something that starts off with a data plate and some original structure, or fittings, but ultimately is rebuilt incorporating only a small percentage of “original” parts (that can be linked with the data plate), is, no more a rebuild than something that starts off as a new build, but aquires an “identity” at a later stage.

For me the term reproduction has been degraded by cheap furniture that has nothing to do with the original piece, other than it bears a passing resemblance ;the quality of wood, and the types of joints utilised are a far cry from the original; also the abbreviation of reproduction to “repro”, seems an intentional slur on which it describes, you don’t hear original abbreviated to “orig” or genuine to “gen”.