Right, right. A crewman dropped his communicator pin during an unexpected time-travel event back to Earth, c.1000 CE. Glad you found it. I think if you turn it in at the Starfleet office in SF, you can get a reward or something.
@kd8bxp Log One was, IIRC, the only one I ever had. IIRC they're embellishments of the scripts from The Animated Series. ST:TAS is overlooked by a lot of fans because of the $6.32 Filmation animation but the stories actually hold up.