Dana 60 rearend?

Need some help. I found what I believe is a Dana 60 rearend that came out of a '68 Coronet. Cover has 12 bolts, axle tubes are stepped down towards the backing plates, backing plate to backing plate is approxiametly 58". Doesn't have a sure-grip, but overall housing is very clean. Does this sound like a Dana 60 and what would it be worth?