This decal was obtained by Brit’s father when he was working at Paramount in the early 1980s. It was given to him by Charles Graffeo who was working on Star Trek: The Wrath of Khan at the time.
It’s a match (although in the negative) to a wall emblem from TWOK, as well as art featured in Mr. Scott’s Guide to the Enterprise.
Patri and Brit's Collection of Star Trek Memorabilia and Art 