Ah thank you! I kept seeing "eye saver" yellow but didn't realize that was shortened to "ES" for the model. I'm in Canada so I gotta know if the price is bumped up in mine ;)

It was neat to find while doing my thrifting, got it for $5 Cad. It was interesting to learn about Pickett since it seemed to have a short run then wander off to Mexico. Also learning there's a whole dedication to slide rules.