Have you looked for a name on it ?? Where did you get this set,,?? Does it seem to be heavy or light weight compared to others ?? Can you take a pic of the back of the andirons so I can see how they are made ?? Sorry about so many questions but can`t guess a value without knowing more !!
I can tell you that the set is more for looking at than using !! That metal would not hold up to serious use in a fireplace !!