Made in China.
The knob is nice looking, with neat finish and good touch feeling.
But material is somehow fragile : after (hand) fitting, a subtil dent is visible on the centre top surface (above the inner contact point with the potentiometre axle).
More concerning, care should be taken when removing it : I broke one edge, trying to remove it, as I needed the help of one screwdriver because fitting is very tight.