£9,500
By DUFRENOY, [O.P.A.] and [J.B.A.L.L.] ÉLIE DE BEAUMONT, 1841-1879.
£60,000
By [BRETEZ, Louis] and [TURGOT, Michel-Etienne], 1739
£30,000
By MERCATOR, Gerard; Henricus HONDIUS; Johannes JANSSONIUS, 1633 [but 1638].
£2,500
By KITCHIN, Thomas, October 1st, 1746.
Lusvergh’s sales catalogue of artists’ drawing and optical instruments, including Galileo’s Sector 

