Dating the wood from historical art objects is a crucial step to ascertain their production time. and support or refute attribution to an artist or a workshop. Dendrochronology is commonly used for this purpose but requires access to the tree-ring pattern in the wood. which can be hindered by preparatory layers. https://www.pomyslnaszycie.com/laguna-3hp-c-flux-cyclone-dust-collector-on-sale/