Royal Society further discussed Leeuwenhoek's diploma
Date:
March 7, 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 26 February / 7 March 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.