Real client case reviewed by ConfirmArt for Portrait of a German Gentleman, attributed or related to Historic & Old Master Cases. The public page presents selected visual evidence and a rendered report viewer without exposing the private commissioned PDF.
Historic & Old Master Cases authentication evidence image 1: Portrait of a German GentlemanHistoric & Old Master Cases authentication evidence image 2: Portrait of a German GentlemanHistoric & Old Master Cases authentication evidence image 3: Portrait of a German GentlemanHistoric & Old Master Cases authentication evidence image 4: Portrait of a German GentlemanHistoric & Old Master Cases authentication evidence image 5: Portrait of a German GentlemanHistoric & Old Master Cases authentication evidence image 6: Portrait of a German GentlemanHistoric & Old Master Cases authentication evidence image 7: Portrait of a German GentlemanHistoric & Old Master Cases authentication evidence image 8: Portrait of a German Gentleman
Report structure
Section summaries
01
Description of the Artwork
The present work, titled Portrait of a German Gentleman , is attributed to F. Schlotterbeck on the basis of an inscription on the verso, which also records the date 1856. According to the technical information presently available, the painting is executed in oil on cardboard and measures approximately 60 40 cm.
02
Technical Observations
The present work is executed in oil on a cardboard support, a material choice that distinguishes it from more conventional canvas-based portraiture of the nineteenth century. While such supports were not uncommon in more modest contexts, they are inherently more sensitive to environmental conditions, particularly fluctuations in humidity, which can result in deformation and surface instability. The later adhesion to a wooden stretcher should be understood as a structural adaptation rather than part of the original
03
Restoration Undertaken by Gian Piero Maiorano
The present painting was professionally conserved by Gian Piero Maiorano, and the full Restoration Report will be included in the page dedicated to the artwork in the Atlantiques Gallery. The following section provides a concise summary of the intervention as documented in that report, together with the accompanying photographic sequence showing the progress of treatment on both the front and the back of the work. 0.32 \scriptsize Front before treatment, with extensive surface accretions, discoloration, and heavy v
Authentication evidence
Selected close details from the human review
Technical ObservationsThe present work is executed in oil on a cardboard support, a material choice that distinguishes it from more conventional canvas-based portraiture of the nineteenth century. While such supports were not uncommon in more modest contexts, they are inherently more sensitive to environmental conditions, particularly fluctuations in humidity, which can result in deformation and sur
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Complete front image
Reverse, support, frame and condition details
Signature, inscriptions, labels or seals
Invoices, certificates, provenance or catalogues
Comparative images, references or previous opinions, if available