Questions about Tabar axe

[Drabant1701]

I have a large Tabar axe, 96 cm long. When i looked on the Internet for information about it I found an exampel that looks very much like mine: http://armsandantiques.com/huge-late...arzin-axe-i206
The only difference i can see is that theirs ha had the cutting edge grinded down around 1 cm.

I have no doubt that these are people how know what they are talking about, I would however like a second opinion as to age and origin, is it late 18th century and persian? If someone by chance can read the text on the axe I hope you can share with me what it says. On the side of the axe head there is a small mark (?) that looks like its been put there on purpose, I took a close up of it in case anyone seen that type of mark before, it could also be a repair or random flaw.

Thank you for your time.