Need Help - May be an H.A.C Mantal Clock made in Warttemberg but not sure

I was given this gorgeous clock from a friend that past away recently that originally acquired it in GERMANY and brought it back within him when he moved to the USA in the 1960's. He had told me that it was his parents for years.. so I am assuming its from the 19th century or turn of the century. I see no name or maker on the dial or the movement. I would love to know more about it and hope some kind persons here can assist me in identifying the maker and model of this gorgeous clock., I also do not have a key for it and never heard it work. It appears to be in very good condition for its age, only wish I had the key to wind it up. PLEASE, anyone who could help provide any info to me about it, I would very much appreciate it. God Bless