This Skate Boarding belt buckle seems to be the plainest buckle you can get to express your interest in skateboarding, and I love it. The buckle was made by BTS in the USA in 1978 and I've found 2 versions of it.
The 2nd of 2 silhouette skateboarder vintage belt buckles, this one was made in the USA in 1978 by BTS. It's one of 2 silhouette skaters I've seen - the other I found a non-silhouette version of the same one so hoping to track down a similar one for this guy.