The Royal Society further discussed Leeuwenhoek's diploma

March 14, 1680

According to Birch's The History of the Royal Society of London, (vol. IV p. 21), the members further dealt with Leeuwenhoek's diploma at the March 4/14, 1680 (O.S./N.S.) meeting, chaired by Joseph Williamson, the Society's president:

The president took with him the diploma for Mr. Leeuwenhoeck, and presented the Society with a screw-press for sealing such diplomas.