The Kalinga came out in 1970 as far as we can tell. It was discontinued 1988. During that time we made about 60k of them. The earliest ones will have micarta handles. Mostly black micarta although there are some red out there.
It sounds like yours has the more common laminate wood handles. The fact that there is no date codes indicates that it was made before 1986.
One way to find out current values is to check the various online auctions such as Ebay. I saw one on there right now selling for $100 so far. For some reason, the kalinga often gets advertised as Rare. We made over 60k of them!
The suggested retail in 1998 was $138.
Hope this helps,
Director of Quality, Buck Knives Inc.
Buck Collectors club Administrator