Rare Pre-Production Benchmade 31S Balisong Butterfly Knife (3″ Satin Serr)

This Pre-Production Benchmade 31S Bali-Song knife came from a collection. It is in great condition but show signs of wear from flipping and use. This knife comes with the original box and papers.

The 31 Bali-Song from Benchmade is a smaller version of the 42 butterfly knife. The blade is 440C (partially serrated) and marked “Pre-Production 014/500” on the back side. The handles are titanium with T-latch and pocket clip.