Marvel Light Bulb cardboard display sign

I found this in my grandpa's attic about 15 years ago - it was with a wire display rack. It's very thick and rigid cardboard with 2 color printing in aqua and navy blue. It didn't seem to have ever been used as a working display. I tried to research the Marvel brand but no luck. Just wondering if anyone else has seen any advertising for Marvel and what the value of this might be. I love the design of this piece and have kept it displayed in our home office.