Krangle1,
This knife was sold in 1979, and is one of the first engraved knives Buck produced. It is one of a set of four knives with different pictures of horses engraved on the blade, the other 3 being a 703, 705 and 709. The issue price of your knife was $68, but the collector value suffers due to the high volume amount of 5500 pieces produced. These knives rarely bring more than $40 on Ebay, and I have bought them for a little as $25. Still a great looking knife, and my wife loves her set!! Peace,