New Old Stock (NOS) vintage slide rule – unused and never put into service.

Includes the original brown leather case stamped “M. Wallrabenstein” and the original cardboard box. The slide rule itself is clean, fully intact, and the scales/markings are clear and easy to read.

Condition:

• Slide rule: NOS / unused, excellent

• Leather case: minor storage/age wear, no major damage

• Box: original, shows wear consistent with age and long-term storage

Sold as pictured. Please review all photos carefully as they are part of the description.