I want to share an interesting R250 strip with you. An interesting fact is the two-digit number. As you can easily count, there could only be 24 such strips.
For examples with the three-digit number there could be 248 strips.
And if we additionally assume that some of the strips have been divided into single stamps then we have a real "rarity"
Of course, I'm joking, but I still think it's a curiosity.