It's definitely a Miyata based on the lug cut-out. The only American market model in black with a silver head tube were the 912 and 312. However, the 912 with this colour scheme used top mount shift levers and I didn't think that cutout went down to the 312 level. It has dropout eyelets, so it's not a repainted Team or Pro. Forks are replacements, so crash inspection is warranted. Maybe it was originally silver and someone did a black repaint, due to bent top and down tubes? That would also explain the lack of decals and suggest a circa 1983 model 912.