Musschenbroek- type, first form, simple hand microscope, unsigned but marked with Musschenbroek workshop stamps (crossed keys & oriental lamp), Leiden, Netherlands, brass and rosewood; (original leather case not seen); 1695-1705, in original leather case, with accessories Musschenbroek- type, first form, simple hand microscope, with case and accessories 1695-1705
Framed ‘Artist impression of the first batch of Ad26NCOV030 (Ad26.COV2.S) produced on 04 May 2020 in L1.26 lab in Leiden, The Netherlands’, drawing by Joost Haasnoot, scientist who worked on the development of the Janssen, Johnson & Johnson, COVID-19 vaccine, dated 7 October 2021 Drawing of the first batch of Janssen COVID-19 vaccine 2021