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| Detail, Aristocrat portrait, Bartholomeus van der Helst, XVII century (before restoration) |
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| Detail, Aristocrat portrait, Bartholomeus van der Helst, XVII century, ( after restoration) |
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| Detail of local consolidation ( lacuna) |
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| Detail, cleaning tests |
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| Detail, cleaning of aged varnishes and dirt process |
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| Detail, Family blazon, cleaning |
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| Detail, cleaning of aged varnish and dirt |
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| Detail, cleaning of aged varnish and dirt |
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| Detail, cleaning |
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| Residual aged varnishes and dirt |
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| writing (possible the year of painting) discovered under layers of dirt, aged varnishes and a subsequent layer of color |
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| On of the previous intervention of restoration; Ancient chromatic found after the cleaning of aged varnishes and dirt |
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| Detail after the cleaning of the ancient chromatic integration intervention |
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| Painting after cleaning of aged varnishes, dirt and previous pictorial interventions of restoration |
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| Detail of filing and leveling of lacunae with gesso |
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| Aristocrat portrait, Bartholomeus van der Helst, XVII century (before restoration) |
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| Aristocrat portrait, Bartholomeus van der Helst, XVII century, ( after restoration) |
