I suppose that shows Carl Linnaeus .
Linnaeus (Linné, Linnaeus) Carl ( 23/05/1707 , Roshult - 10.01.1778 , Uppsala ) , the Swedish naturalist , a member of the Paris Academy of Sciences (1762). He received worldwide fame thanks to their established system of flora and fauna .
For photo is difficult to say at what the board says , but the texture is similar to oak (?) .