The Indian Chief appears to be about 1935 to 1937. Reasons, low mount horn and high mount headlite, has the early dash. 1938 was first year of the aluminum dash. 35 would have threaded gas caps, hard to tell, also no valance on the rear fender and non interchangable front wheel. Would like to see the gas caps and tail lite better to get a better idea. Also I think if I remember right the side stand might be differrent in those years also. I think I have bought some front end parts off of the harley and the chief! LOL!!! thanks for the photosa.