A DUTCH ACHROMATIC POCKET TELESCOPE
JAN VAN DEIJL, 1770
signed Jan van Deyl en Zoon Inv, et Fec, Amsterdam 1770, the lacquered brass tube with dustcap at one end, the eyepiece unscrews and reverses to tuck into the tube for storage; in a green velvet-lined shagreen case.
10in. (26cm.) long
A DUTCH ACHROMATIC POCKET TELESCOPE
JAN VAN DEIJL, 1770
signed Jan van Deyl en Zoon Inv, et Fec, Amsterdam 1770, the lacquered brass tube with dustcap at one end, the eyepiece unscrews and reverses to tuck into the tube for storage; in a green velvet-lined shagreen case.
10in. (26cm.) long
