1980s Brass Computer Bookends

This set of vintage brass computer bookends are rear to find a set. They are in good condition and were from the 1980s. 
Measure - 12 cm x 12 cm 
 
P.S - For some reason, I have been fascinated by these bookends for quite some time. 
I was very pleased to finally get my hands on them. I believe this could be a rare fascination so they might be in my hands for a while.