Cool guitar! Would like to see more photos. I've seen quite a few '60s arch top Hoyer branded guitars on Reverb, and would assume this is the same Hoyer whose name is carried on those.My apologies. I forget to ID it. It is a 1959 Rodebald Hoyer "Rumba" acoustic archtop.
Here is a pic of Mr.Hoyer on the left in his shop. He passed away in 1964.
EDIT: That headstock is wild!