This is the optimus 100N which is a very rare highly collectible lantern and very hard to find in this condition nowdays. Its missing the original glas which is easily replaced and has one small buckle under the turning wheel else its in perfect condition.
All orginal and has never been restored and havent been touched for 50-60 years.
Havent tested it by myself and have no knowledge of the product. What you see is what you get.

Payment within 14 days and shipping within 7 days after payment.
Shipping worldwide, Taiwan shipping with ups 60$.