The El Greco looted in 1944 by the Nazi Gestapo from Julius Priester passed through Rudolf J. Heinemann, (1901 – February 7, 1975) and the business he owned, Pinakos, and Frederick Mont (aka Fritz Mondschein) and the gallery he owned, Galerie Sanct Lukas, before being identified. The provenance of the looted artwork was falsified, and it took more than seventy years to find it, claim it and obtain restitution (in 2015). The obvious question for museums to ask themselves is: which artworks in our collections passed through these individuals or their businesses and are there any provenance gaps or discrepancies that require further verification.
The number of questions marks "?" (49) and "probably" (41) and "possibly" (30) and "might have" or "may have" (12) suggests the presence of guesswork and speculation.
Below are a few of the artworks known to have passed through Heinemann or Mont.
