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This sample retains the most complete finish history of the group, with three generations of coatings. The first generation is shellac which is trapped in the wood and present as an uneven, cracked, disturbed layer on top of the wood (shellac was identified based on its characteristic pale orange autofluorescence).  There is no evidence of a “bricking” pattern in the cracking or oxidation of this first shellac coating.
The second and third generations are pigmented plant resin varnishes which are cracked and dirty. None of the layers reacted positively for the presence of oils with the fluorochrome DCF.


Sample 1 - Scallop edge carving. Visible Light, 200X.


Ultraviolet Light, 400X.


Ultraviolet Light, 200X.


UV Light & DCF for saturated and unsaturated lipids (oils) 200X. No distinct positive reactions for oils in the coating layers.


Sample 2 - Underside pad foot

There is shellac trapped in the wood in this sample, followed by two generations of pigmented varnish, and the most recent unpigmented plant resin varnish coating. The original shellac coating on the surface of the wood may be missing due to wear or abrasion.


Sample 2 - Underside pad foot. Visible Light, 200X. 


Ultraviolet Light, 200X.