Now that you show a picture with the Columbus front dropout and the treatment between it and the fork blade, there can be no doubt your fork was made by Miele. Another strong indicator is the position and size of the breathing hole to let hot air out when it is brazed. The one on your fork and my fork are exactly the same. Miele did chrome plating too.

However I don't know if Miele subcontracted frames to other sellers that used a different brand name. I'm not familiar with the different Miele models either. Just like all the different brands of steerers I got from their factory when it closed, so did they have all kinds of different brands of tubing too. I didn't get at their auction much tubing but what I did get was Tange #1.

I measured my fork and from the center of the brake hole to the center of a front axle = 360mm. If you subtract a 700C rim diameter of 311, that leaves 49mm for brake clearance. That means the brakes shoes have to be set at the bottom of a 39/49 or 50 short reach brake. That leave the most space for a tire. In other words a 28m tire will fit (that wouldn't fit if the fork was designed to the brake shoes to be in the middle of the slot.

The fork rake was 43mm.