Lifeguard Trench Periscope.

First World War period, privately purchased British collapsible trench periscope . The periscope, (L 13cm (folded) x W 13cm x H 7cm), consisting of two parallel sets of lazy tongs, with mirror holders at each end;The periscope is marked as folows: THE LIFEGUARD POCKET PERISCOPE / Patent No.163/15 Sole Makers / F.Duerr & Sons / Manchester, S.W.' In excellent , clean condition.

Code: 7663