38 The Annunciation retable For the smaller lacuna, it was an easier and more suitable approach to apply a more paste-like putty with a fine spatula. The mentioned formula was modified with additional filling material to achieve a paste-like consistency. Due to the amount of loss, it was decided to fill and retouch almost every individual loss down to a very small size. This fulfilled the need for additional stability of the paint layer, allowing for the checking of any future damage or loss.40 After closing the lacunae, retouching varnish MS2A in a 25% solution in white spirit 100-140 was applied on the painting. A cotton wad with fine textile covering moderately soaked in varnish was gently rubbed over the surface in circular strokes to achieve a balanced gloss. Retouching In order to achieve an aesthetic balance of the entire object and to restore the legibility of the depicted scene, a complete retouching was decided Fig. 60, 61: The area of the “bat hole” after filling and after retouching
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