Skunk Works sign Lockheed Martin

Any guesses about the origin of this sign? It looks to be lithography or silkscreen print on silver metallic paper, and mounted on an art board substrate. Overall condition is pretty good with minor blemishes. The artist initials are LH in the skunk art. The back has a signature that reads "J. Scott."

The only clue I can offer about its history is that it was found in a shop near a poster titled "Lockheed Legends" showing the Skunk logo in the sky with the SR-71, U-2, F-117, and many others, and the poster is printed with ©1993 Lockheed Advanced Development.

The only other thing I can think of is that I live in Chico, CA and the former SR-71 pilot, Brian Shul, was retired in nearby Marysville. There's also an airport in Chico with some older aircraft and a museum. I've listed this item for sale at auction on eBay.

It may just be coincidence but could J. Scott be the same J. Scott who, with Bill Ward, created Rocky and Bullwinkle?

No, but thanks for your guess. The artwork is signed LH (in plate) by the artist. It's a mystery.

I received a reply from the Crescent Cardboard company that makes the art board this sign is mounted on. Based on the logo and product information they said this is a 1950s era product, so the sign is either from the 50s or 60s based on the material.