Second (and later) impressions can maintain some value if the first impression is particulary hard to find to in a collectable condition or if the cost of a first impression is prohibitive to most collectors.

Also if a later impression has a very good condition dust jacket which matches the DJ issued with the first impression, people will buy a 2nd impression to get a DJ for their jacketless first.

At a rough guess personally I would try an auction starting at about 10% of the value of the 1st.