Based on your experience, of the 1950-1979 Ludwig, Gretsch, Slingerland and Rogers kits that are still playable today, what percent do you think remains unmodified? For purposes of this discussion, I’m going fairly liberal: I think of unmodified as no re-wrapping, no extra holes, no non-factory mods, no material repairs, etc. I would accept as unmodified: non-standard equipment factory-installed or installed at time of purchase by the original retailer, new heads/snares/etc., minor cleaning or light sanding of edges, touching up black hoops, etc.
What do you all think?