The above are badik-like but aren't. They are Thai.
Similar "krich cab pun phk" or "มีดด้ามปืนพก" knives are commonly found in Thailand, old and newly made...Note the decorations
See also:
http://www.arscives.com/historysteel...tionmusbkk.htm
Has some interesting weapons photos, include some of these "pistol grip knives".