This is a Astron RS-10A Power Supply 13.8 VDC 6A Continuous.
Item in very good condition. Tested and working great. Shows some using wears and scratches.
Output: 13.8 VDC 6A Continous
Input: 115 VAC 60 Hz 2.5 A
Serial # 8810216
Made in USA
For more details, please look at the photos.