89iay, Very Rare Brand!

86IaY
Wz.1(S) -S is a rhombus located horizontally.
I discovered this brand in 2024.
Rarity RRR+

Between the thread title and your post, the catalogue number (it looks like a Michel number) has changed.

I cannot see the watermark from your pictures. And from your other post, you are very prone to use the word "rare."

NB, for those who do not understand the word "brand." Many languages use 'mark' or a variation thereof for a stamp. Google translate does not get that 'mark' is a stamp and not a brand which often is a similar word.

Sorry, but I don't see it. Perhaps an arrow like your other post.

I also second the idea that using the word "rare" should be use rarely.

Whatever the "rarity" is intended to be, I'm not seeing it...