The Star B is a Spanish made 9mm on the design of the 1911. They were made back during WWII and surface from time to time. I got one back in 2001 for $205.05 from SOG including shipping. Now AIM offers them for $299.95 plus shipping. Guess they have appreciated in value a bit in any case.
AIM sells them pretty good as pointing out features and benefits...like the "checkered backstrap"... Hardly earth shaking...but hey.. they are selling their product.
Cool gun. I've never owned one but they seem to be pretty neat to me. If I had seen this thread before the pistol ID thread I would have been a little more sure of my call on the Ballester/Star photo.
(I guessed one of them was a Star Model B because you said one wasn't a .45)