Aparece como“Gray” éste motor en un anuncio patrocinado por “Rubel” de Louisville.

This company appears as "Gray" this engine in an ad sponsored by "Rubel" of Louisville.

“Gray engine ad”

-As the engine has a huge resemblance to the "Grey Eagle of the same type and power (actually they are Kemp), the author has doubts that Gray is the real name. I would bet better for Gray.

-Grey also has the Kemp 6-cylinder as the ad says.

-I leave both brands Grey and Gray since both come with a graphic document that authenticates them and I put it to the reader's consideration.