I ‘know’ that I’ve seen that brand somewhere but am drawing a blank on where. I looked in a couple of Robin Hood Archery catalogs and a few Archers Digests that I have but came up with nothing. I’ guessing that the bow was early ’60s but that’s sadly, the best I can come up with.
Ben Pearson had a line of ‘Mercury’ bows that actually had mercury capsules in the risers but I’m pretty sure that your bow is not one of those.
Sorry.