拍品专文
cf. Victor Arwas, op. cit., p. 158.
Professor Otto Poertzel was a Berlin designer who worked on an occasional free lance basis for Ferdinand Preiss' firm, Preiss & Kassler, and was also employed by another Berlin foundry, Rosenthal und Maeder.
Professor Otto Poertzel was a Berlin designer who worked on an occasional free lance basis for Ferdinand Preiss' firm, Preiss & Kassler, and was also employed by another Berlin foundry, Rosenthal und Maeder.