Max Wedge heads

So I was hoping for some advice. I purchased a pile of parts from a guy and included were a set of iron big block heads. I got them home and started checking them out. They have adjustable steel crane rockers and after checking casting numbers they turned out to be #2406518 64 Max Wedge heads. They are original and not the re-pops and from what I am finding they seem to be very desirable and very hard to find. So my question is should I have them gone threw and run them on my 440 for my Duster or are they valuable enough to sell and buy some trick flows? I like the idea of running them but if they are really that rare I am not sure. Thanks in advance.