Since the mounts are a bit older or look to be older, I would agree with ripping the horns off and selling the racks alone. As far as price, it all depends on score unless you have some non typical stuff that doesn't score as high. Dubuque auction is a great place to sell antlers but at the same time, there are some BIG stuff that comes through there and you probably won't get what you want for them if you take them there. Maybe I'm wrong on that, just my opinion. From what I hear, the Dubuque auction is more of a place for collectors to find bigger pieces.