Turkish shamshir-strange mark

[DaveS]

Here is a Turkish shamshir for viewing, It has a 33 inch wootz blade, almost 39 inches overall with a rhino horn handle. It has a very strange mark of inlaid silver dots that appears to read as 1612. I'm sure this can't be a date, so does anyone have any ideas, like maybe, although unlikely, an armory number.....Dave.