For finer details like engravings to hardware, I may use various magnification lenses to assess whether, for example, engraving entry and exit points are where they should be. Overall design details, materials, engraving, logos, font sets and production standards can vary vastly, I check for consistency with regards to model, factory and production era, as well as assess whether variations sit within the expected bandwidth for natural variation in
luxury craftsmanship for a particular design house.”