I was bored and was researching around the internet for a while and your guy has me stumped!! He looks like a OEGB but his legs are yellow, all the black OEGB's I found had dark legs. He also looks like he could be a Black Leghorn Bantam but his ears are not white. Whatever he is, I think he is unique in his coloring! Sure is a handsome fellow!
Looks like mine and I don't know what they are. I have 2 roos and had 4 hens from same batch but I lost a hen. My girls are solid black, white with black speckles and black with white speckles.