The porch to the house my husband and I were considering purchasing had an old cast iron banister railing around it.  It was in pretty poor repair.  We wanted to make sure we could replace it with rod iron, but it had to look authentic to the period and match the decor on the rest of the property.  Amazingly, bespoke gates was able to help. They had quite a selection of rod iron banisters we could choose from and once we chose, they got it installed pretty quick.  They did such a good job we had them install a rod iron front door as well.