That such apostrophe?

[-JKP-]

About what these examples indicate? !!!!!
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That's a good question Wladimir - I've seen those exact letters also, when I copied the text. My guess was that he made a mistake: he started to write one letter, and then he realized he needed to write a different letter?

He's clearly used to writing Latin abbreviations—the abbreviation shapes are mostly fluid and natural, moreso than odd letters like gallows characters. So... another possibility is that there are letters missing by the caps but that the glyphs already mean that and he simply added the caps out of habit and they are redundant.

A third possibility is that he used the glyphs to represent a less common sequence of letters in which there are letters in between and added the cap to represent them and they are in fact meaningful.