Mahogany Ring with Lens Ring?, Late 19th Century

Subject: Optical instruments
Item type: Object
Provenance: Not ascertained.
Primary inscriptions: Unsigned and undated.
Physical material: Mahogany; Copper Alloy
Dimensions: Diameter: 95mm Height: 240mm Width: 97mm Depth: 18mm Weight: 65g
Inventory No: 13756

Description

Mahogany ring mounted on a copper alloy rod, identical to inv. no. 28286.