Demainbray's turquoise disc
1745-1755
Demainbray's yellow disc
1745-1755
Green glass disc, 1725-1750.
1725-1750
Wood screw from green glass disc, 1725-1750.
1725-1750
Pair of coloured glass discs, 1750.
1745-1755
Ten blackwood and ivory discs
1843-1884
Disc, metal, obverse covered with concentric grooved circles
Disc, metal, obverse covered with concentric grooved circles
Pair of Marble Adhesion Discs, with Band and Ring Handle
Disc to block out one side of trial frames
Discs for Leipzig wheel
Ivory Discs for Optical Model
Eight ivory discs inlaid
1843-1884
Two copper covered discs, one zinc disc
1780
Pewter discs for making bases of tankards or small dishes
1996
Fifty pairs of discs for Symphonion twin-disc musical box
Disc, on side arm, reflector?
Ten pairs of discs for Symphonion twin-disc musical box
Four ivory stage discs
Green glass disc, 1725-1750.
1725-1750