Antique Decagonal Ten Side Mahogany Ship Captain’s Spyglass Consign Now DeptMaritime ArtsSizeClosed length 26 in. Diameter 2 in. Antique Decagonal Ten Side Mahogany Ship Captain’s Spyglass, late 18th century, single draw, brass fittings, sliding lens covers. Closed length 26 in. Diameter 2 in. Please note that this auction has ended. Click here for an overview of this auction.