Blank log
The blank bill is originally a 30 cm long, 3–4 cm wide board that was inserted into a recess in the front center of a lace chest in the 16th to 18th centuries , around the fashionable straight line between chest and stomach at the time to achieve. It was mainly made of wood, horn or whalebone , rarely also of metal. Finely carved and decorated with sayings or declarations of love, it was a popular gift of love.
When the favored corset line changed at the beginning of the 19th century, the blank log went out of fashion. When a new kind of corset clasp was invented in 1829, it was also baptized blank bill, but was called planchet or planchette more often (probably for better differentiation) with the French name . The planchet, which still closes corsets in the front center, consists of two metal strips, one of which carries nail-like pins, the other eyelets. You hook it up at the front and then use the lacing in the back only to pull it tight without ever opening it. Before the invention of the planchet, you had to open the lacing completely every time you put on and take off.