Hi Norman,
Nice work you are doing, and I am glad to see, that you go the slow way, and don’t start out with an acid bath
. On one of my blades someone had kept himself busy sharpening the edge with a file. A fact I did not enjoy much, as I knew how long time it would take to remove the marks by hand. Instead I used Dremel finishing abrasive buffs #511, and with a good result I may add, but you should only work on a small area, to see if it also works for you.
Before you go on reading, you should remember, that these hilts have been used over a very big area, so even if you see a tulwar with the same blade and hilt, with a provenience tying it to a specific place, yours could come from a different place.
I too have a tulwar with the marks you show. The hilt on mine is slimmer, decorated, and with a hand guard. On each side of the blade is the same stamp as on yours, but on mine there are also four suns, and on the ricasso a round stamp with the name Ibrahim. On the back of the blade there is a stamp with a letter and a number, the letter is K/KA/KAH and the number 76.
Jens