In good condition, a Tibetan / Nepalese / Bhutanese Dughti Temple Knife
Silver acid test shows some silver content, so the tested area is silver alloy (see two images below). Most likely mid 20C Nepalese.
The 7 1/2 inch blade, inlaid with a decorative brass swirl one side, is in aged but good condition and firm in the hilt. The hilt and scabbard with some yellowing (tarnish) indicating some silver content. The dagger sheathes and draws well. Just under 11 1/2 inches when fully sheathed.
Good example, good condition, great price: £150. Please quote item reference Y30. Further / full sized images available upon request. Box 1413-51x12x10 (0.528).