"Dollond London 6-pull Theatre Opera Glasses, Spyglass, 19th Century"
A brass opera spyglass with six lenses. Made by Dollond, London. It measures unfolded and 3.66 inches high folded. The diameter is 1,85 inches. The optics are in perfect working order. You can use it for your outings to the opera or the theatre. Datable to the mid-19th century. 
Le Magazine de PROANTIC
TRÉSORS Magazine
Rivista Artiquariato
