Acheen -- Sumatra mid 19th century.
33" overall length - 25" long blade with very shallow 19" fuller just below the spine. Feels very good in the hand. Definitely a "user" with some history.
Blade probably laminated, someday I'll clean and stain it, or maybe Steve F will help??
The steel bolster is forged in a polygonal shape with two unusual side "wings". The hilt is black horn in a typical forked pommel and beautifully carved with great patina and wear from usage.
The scabbard mouth is carved from a massive carved elephant ivory piece. The scabbard wood is newer than the blade and hilt, But do you often see a scabbard younger than the blade?