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Model of Leeuwenhoek's microscope

1901-1930

Rienks's Reflecting microscope

1826

One 7 1/2-inch brass sector by Anthonius Hoevenaer

1720-1760
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