Most state taxing authorities will either use a "stated value" (what you say it is worth) or some form of appraisal guideline. I would just go in with a copy of your check that you paid for it with, or a copy of the purchase and sale agreement you executed between you and the seller. However, I have researched BOS's on 3 airplanes spanning 40 years in the case of the Cherokee, and it is rare to find anything past 1970 that has an actual value printed in it. $1 and OVC is the standard it seems.
