This vintage Sencore Electro Sub Substitution Unit Model ES-102 is a must-have for any electronics enthusiast. With its high-quality build and reliable performance, this unit is perfect for anyone looking to substitute capacitors with ease. The unit was made in the United States and is in unknown condition. The ES-102 is a versatile and easy-to-use capacitor substitution unit that is perfect for a wide range of electronic applications. It features a robust design, simple operation, and high-quality components that ensure reliable performance. Whether you're looking to replace capacitors in vintage electronics or modern devices, the ES-102 is the perfect tool for the job.