Dave Conrad, a metal worker from Baltimore, made a pair of reproduction Marbelite fins for me in 2019. Inspired by the Baltimore ped head pictured on the left (courtesy of the Baltimore Ghosts website), I put the fins on a 2-section Marbelite with WAIT and WALK lenses. The result is one of my favorite signals in my collection.

You can follow this link for a little more information on Finned Marbelites.