Here are some more Buck Rogers models that originally appeared in BSG. Above: The Canares (sp?) shuttle from The Man With Nine Lives was originally a background rag tag fleet ship. This is from Ardala Returns where it's redressed as a Directorate shuttle.
Above: From the same episode, the fake Earth probe was originally a Cylon mine from Saga of a Star World.
Above: The Gemini Freighter appears in Space Vampire. They made a tiny version for the scene where the freighter collides with the space station.
Above: Yep, the flying brick crashes again in Journey to Oasis from season two of Buck.
Above: Formerly Robber's shuttle from The Long Patrol, this is the dwarves' ship from Shgoratchx!
Above: The Cylon Tanker, pictured with added nascelles from The Dorian Secret.