Hi Jens,
You can see it entire in post #6 .
Circles with dots on the rivet washers and the simple line and dot decoration of the hilt hint of it (my opinion); the blade stamp is possibly that of Mazar I Sharif ?
Or do I just imagine a slight resemblance to that mark everywhere I look ?
Then there's the terminal on the knucklebow which resembles the down turned quillon on a pulouar .