nce that might synonymously be termed 'historically informed' or,
'historically aware, 'or employing 'period' or 'original' instruments and techniques. [Arts] 
n., So the claim of authenticity was based on identification of a photographer a time and place of exposure and a chain of
transmission. [Arts] 
n., The term 'authenticity' can also be applied, as in the popular art world, to works that are proved to be genuine, demonstrated
by the work of a particular composer. [Arts] 
n., An authentic performance i