Fig. 2
![Fig. 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40494-022-00649-x/MediaObjects/40494_2022_649_Fig2_HTML.png)
©HPM & AJC, HERCULES Lab—U. Évora, Portugal
Structure of the preparatory layers in the reconstructions. The nature and composition of the intermediate layers (animal glue, linseed oil and imprimatura) are specified in Table 2.
©HPM & AJC, HERCULES Lab—U. Évora, Portugal
Structure of the preparatory layers in the reconstructions. The nature and composition of the intermediate layers (animal glue, linseed oil and imprimatura) are specified in Table 2.