Used 1962 Cadillac 390 harmonic balancer. I believe this fits all 1958-1962 365 and 390 Cadillac engines without air conditioning. I did remove this from a 1962 Cadillac with air conditioning, but this balancer has the narrower 5/16" outer hub width so I think it was changed at one time and this is from a non-a/c car. Balancer has been cleaned, blasted and lightly sprayed with some cast iron paint. No cracks or breaks. All threaded holes are good. Outer hub is in correct location, not slipped. Timing marks are very legible. Some light wear on neck. Few small 'shelf wear' handling nicks on part.