You can have the plans copied and use copies to work on. You can electrostatically copy the die-cut printwood sheets and transfer the lines to new sheet balsa using laquer thinner dampened cotton or an old sock. Berkeley kits usually don't include drawings of all diecut parts on the plans. You can use a scanner to copy decals and make wing numerals using trim film. The intact kit may be worth $200+ to a collector especially if kitbox looks reasonably good.
I have a lot of vintage Berkeley, Jetco and Flyline kits and may keep some of them intact this way. Having the plans copied is probably a good idea in case you want to share or sell them.
