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Before and after: antique painting with flowers
This is a lovely little oil painting made by a relatively unknown female artist named van Bueren. The painting suffered from paint loss. I cleaned the surface, filled in the missing paint with gesso over the course of a few days so I could build up the gesso to match the painted areas. I need less than an millimeter but it literally has to add up to make the restore job as unnoticeable as possible. After the procedure, the piece was laquered.

Oil painting by van Bueren on painters board, some paint loss occurred. 

Before and after 
The end result