Stamp Giveaway # 55 (Southeast Asia mostly souvenir sheets) [solved]

Philippines, Horses set & souvenir sheet, 1984 Olympics souvenir sheet, Heroes, souvenir sheet, no gum, crease, hinged; Portuguese Timor, people in ethnic dress, souvenir sheet

Question: What 3 letters, in order, are the rarest to start German license plates?

Winner will be first response with correct answer received before or at 2 P.M., eastern US time, 23 November 2021. If there is no correct answer, first response will be winner. My decision of winner is final.

Good luck to all who choose to participate!

Will

X - NATO Forces vehicles,
Y - Armed Forces vehicles,
Q - (1) QFT - Querfurt, Saxony Anhalt, (2) QLB - Quedlinburg, Saxony-Anhalt
My answer - X, Y & Q

BÜS for Büsingen with just around ~776 license plates.

Looks like I have misinterpreted the question by far. I should have stayed away from this question.

Congratulations, MS2007! Good try, Najuk!

It is getting hard to find more difficult questions that still can be solved with the right sources. I wanted to ask what 2 areas of land in the world are unclaimed by any country. But it is very easy to find. I never heard of them and I thought I was very well educated about geography!

I still have lots of stamps and souvenir sheets to award. Keep watching the forum.

Will

Awesome...thanks!