This poster focuses on the examination and conservation of a mid-19th century painting on a tin-plated iron support. The small-scale portrait was affected by severe paint delamination and cleavages. The damage was treated in 1994, supported by analytical and technical investigations. Selected adhesives and various filler preparations were tested. Finally, Paraloid B-48N was applied as most appropriate consolidant while a preparation containing Lascaux Adhesive Wax 443-95 and chalk was chosen for the fillings and Mowilith 20 for retouching. However, about 20 years later separation and lifting of the paint layer were noticed again. UV investigation revealed that the affected areas were almost not identical with the consolidated sections at that time. The main focus of this study is the re-examination of the painting and the reassessment of the analytical and technical investigations in order to compare the results with the findings of the previous study. It is hoped to verify whether inadequate preparation of the tin-coated iron plate and/or mechanical impacts – as proposed by the author of the 1994 study – might be have caused the delamination. The preliminary results of these examinations suggest indeed, that the contribution of mechanical impact might be the initial and decisive factor for the delamination. Presumably, the previous treatment was partially insufficient, since the consolidant was probably not able to penetrate beneath the flakes of the blind cleavages. Before recent treatment, the choice of the already applied conservation materials had been evaluated concerning their condition after a 20 years period. As the instable paint condition might be rather attributed to the impossibility of applying consolidant beneath blind cleavages than to a failure of the consolidant itself, it was decided to use the same conservation materials as in the previous treatment.