with any boat, its value is based on condition, condition, condition
that boat is celebrating its 58th year, not bad for a boat designed to last 15 and be replaced. that fact alone could mean that the boat is a garage-kept gem or something pulled from the weeds and cleaned up for a quick flip. it will have to be gone over with a fine-toothed comb to know if its a good deal or not.
with any aluminum boat under $5k and any fiberglass boat under $10k should be looked at as a project boat unless otherwise proven in perfect working order.