Original box pre-1951 with 8 Auto Lamp Bulbs #1252. Package states: 24-28 V - 3 C.P. (see photos for further details) Tung-Sol Lamp Works Inc. which according to the company history dates these light bulbs pre-1951 when the company changed names to Tung-Sol Electric Inc. The company was founded in 1907. Optically the bulb filaments look fine.