These covers from @McGeekiest Cachets feature a backdrop of the Starship Enterprise at warp speed. In the lower left, Leonard Nimoy appears is his iconic role as Mr. Spock, giving a Vulcan hand salute. It bears one blue stamp from the 2016 Star Trek issue (Scott #5135) and is postmarked with a "Star Trek Mission: New York" pictorial postmark from New York City, New York, 10001 dated September 2, 2016.