Antique Optical Lantern Condenser Lens/Magnifier, Heavy Desk Piece, 6.25 inches, 2kg

A genuine antique condenser lens from a magic lantern (optical lantern), the forerunner of the slide projector, used from the mid-1800s through the early 20th century for public lectures, entertainment shows and early photographic projection. Often seen listed as a nautical “map/chart magnifier”.

The piece is substantial and solidly made and weighs just under 2kg. Today, pieces like this are popularly kept and sold as heavy, tactile desk pieces or paperweights, prized by collectors of magic lanterns, photographica and early optical instruments, as well as anyone after a genuinely old, substantial piece for a desk, shelf or study.

Please view all photos and this is an antique/vintage item sold as seen.

• Type: Magic lantern / optical lantern condenser lens assembly. A matched pair of plano-convex lenses, mounted convex-side-to-convex-side with a small air gap between them, in a fixed cylindrical housing
• Material: Black japanned steel or iron housing
• Diameter: 6¼ in (approx. 15.9 cm)
• Weight: Just under 2 kg
• Origin/period: Likely English or European, magic lantern era (roughly 1850s–1920s)
• Condition: Used/antique. One small chip to the edge of the outer glass lens; light surface scratches to the lens face and housing consistent with age and handling. Structurally solid; the two lens elements are correctly seated with an air gap intact.
• Safety note: As with any large positive lens, keep it out of direct sunlight when displayed, since it can concentrate sunlight to a burn/fire-starting point.

Registered Shipping: €15.