Peter Helm on AUGUST RIEDEL attr. VIENNA EXPERTISE auctionWINauktion Louis Leopold Robert attr. HELMUT BOERSCH-SUPAN Statement P1H value

‚Italienischer Hirtenjunge‘

Auction WIN Auktion

August Riedel attr.

(Vienna Expertise)

Louis Léopold Robert attr.

(Helmut Boersch-Supan Berlin Statement)

Peter Helm

P1H

values

polygraficum1980-2020polygraphicum