I am quite certain that the builder's plate #2032 that is attached to that boat is an original Herreshoff builder's plate. The number strongly suggests that it was for one of the Quincy Adams-built 12 1/2s from between 1943 and 1948.
Which is not to mean that the boat in the advertisement was built or designed by Herreshoff. There is nothing in those photos which suggests that boat to be a Herreshoff.
Which probably means the builder's plate has simply found a new home on another boat.