NOS in old texas instrument boxes labeled "control data." Date of manufacture stickers indicate they were likely from 1985, but we can't verify. Multiple units are available, so you may not receive the exact one pictured. 

We're a surplus store, and we aren't experts with most of this stuff.  So, we don't make any guarantees beyond what's stated in the listing & pictures.
Feel free to contact us with any questions!

DB