Scottish Dirk Late 18th Century

[Pukka Bundook]

A Very interesting dirk, and as Jim says a little earlier in the century I would say.
Towards the end of the century and into the 1800's, blades were much wider towards the tip, and have a different look to the hilt. This one is definately earlier.
I can't make out the letters/ initials on the gorget, but I see a crown below it.

It Has to be an officer's dirk,...and I am always very careful about using the term "Officer"!
Crown, Gorget, and if we knew what the letters are on the gorget, it may help ID it.
What is interesting to me, is that it appears to have been used a great deal.

Lovely piece and congrats!!

Edited to add;
This hilt has been niggling at me Jose, so Just looked, and the shoulders on this hilt look nearly identical to those on Government hilts, C 1725 -50.

Best,
R