Clocks, clocks! I want to know your four odd things. My three odd things are: 1. it's a 24-hour clock, 2. its numerals are rotated 90 degrees counter-clockwise from their usual display orientation on a clockface, and 3. there is no subtractive form in any of the numerals. I guess 4. might be that there is no "high noon": it's off-center of straight up. But I was counting that as an artifact of the 24-hourness. Oh! Twenty-four! There's no zero.

May I presume that the four figures are the gospel-makers? They look awful sad.