I'm not sure how the front "pillar" may have been formed, but I would do it by folding and forge welding, maybe 3/8" bar, then bend the front of the bow down and draw it out. It will take some file work, for sure, to refine the pillar, front of the bow, and finial, but that's the way I would do it.
Just kinda thinkin'...typin' out loud, so to speak...type.
God bless