Hi Jonno, this is indeed a beautiful piece of sikin that i have ever seen
As I see it, there are names of God - "Allah, Allah" intricately interwined in the gold floral works, at the side of the blade.
While it may be difficult to decipher the words at the top of the blade (as some of the goldworks have already worn off and lost), the words could read as follows:
"Ini sikin Teuku Jalit/Jalik Pekan/Pelan" which means "This is sikin Teuku Jalit/jalik Pekan/Pelan".
As some of the dots / stroke in the arabic alphabets / words are either worn off and lost, I can only deduced and decipher from the black marks left on the lost goldworks.