If you want some real insider information, you can reach out to Nabs Carlson, who not only worked for Oakley during its heyday, but also at Morgan during the period when the tables were produced:
https://www.linkedin.com/in/nabscarlson
There are several versions of the nesting tables over the years, with yours being one of the earliest. Not sure how many were made or how many different manufacturers ended up making them.
Other than that, slap some WD40 on it to keep it from rusting.