Drawing of a boat on a piece of paper with some text written on it

Pair of vacuum tubes sitting on top of each other

Old black and white photo of a man with a beard standing on the floor…

Old book with a table of numbers on it

Black and white drawing of a floral design in the center of a white…

Chinese calligraphy scroll with Chinese characters written on it

Red fleur de lis on a white background

Chinese calligraphy scroll with Chinese characters written on it

Black and white drawing of a tree in the middle of a field