A real nice Octagon newel post and Twisted rail caps start off this incredible stair design and layout. Toad Back handrail profile pretty standard for the times and a great finial turning for finish off the top of the cap
You don't see too many Level return handrails in these early stair layouts, here is one where the newel post does not match the octagon starting post.
A great view looking up through the stairwell, the tight and twisting handrail is very dramatic as it makes it way up to the 2nd floor hallway area.
Here in this view you can really see the overall stair design...note the reversed curved treads at the top of the stairs to keep the pitch the same as the rest of the stairs.