Hermann Glockner ( 1889 - 1987 ) was a German painter. Hermann Glockner s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 655.58 USD for Profil 1957 in 2004 to 143659.21 USD for Rechtwinkelige Durchdringung: Zeichen F auf Schwarz in 2017 , based on the size and medium of the artwork.