Brand	Texas Instruments
Type	Scientific/Engineering
Release Date	1977
Display Type	LED
Serial Num.	3737282
Date code	ATA3580
Country of origin	N/A

Acquired as part of a lot of 18 calculators on July 8, 2022. According to the date code this calculator was manufactured in the 35th week of 1980 in the USA at the Abilene, TX plant. I have not yet confirmed whether this calculator is functional or not. The original battery pack no longer functions and needs to be either refurbished or replaced with a modern battery solution.