This 1930s ring has the same ring base as the Orphan Annie Mystic Eye Ring and the Lone Ranger National Defenders Ring. Like those, this has a compartment on the top containing a mirror and the ring is used by looking into a small slot on the front edge and then whatever is at the far right can be seen on the interior mirror. Ring top reads "Secret Agent" with a pair of star accents. Our one other NM example in Auction #183 sold for $1000. This example is Essentially Mint. We believe the few known examples came from the Robbins Co. in-house group of items that came into the collectors market in the 1970s. The Robbins name appears on the interior of the ring base.