Pre-owned and tested. In working condition. But rent plate shows wear. Refer to close up or the it m. The product is a vintage HP 16C calculator made by Hewlett Packard in the United States. This calculator is a classic piece of consumer electronics that is sought after by collectors due to its historical significance and reliability. The HP 16C model is known for its durability and functionality, making it a valuable addition to any vintage calculator collection. Its brand reputation and country of origin further add to its appeal and authenticity.