What is this bumper off of?

[dlisabeth]

I bought this bumper years ago at a swap meet. It was and has been wrappedup in cardboard with 63-66 chevy pickup front written on it. So I unwrapped it last week and went to bolt it on only to find out that the holes don't line up. In fact they aren't even close. The 2 outside holes for the braces do line up but the 4 holes for the frame are off by about 9 inches. Otherwise the bumper looks and fits perfect. Does anyone have any idea what this could be meant for? I would love to know so that I can try to sell it (kinda hard to do not knowing what vehicle it fits!).

Thanks,

Derek