When you do history, the only real discoveries consist of unearthing things that everyone, or some, or at least the discover, did not know about till then.
I had this experience when I followed up a note in Hoskier's Text of the Apocalypse. He notes that three manuscripts of Revelation have a curious little drawing (or perhaps better a pictogram) instead of the word 'the sun' 'ο ηλιος'.
Thanks to the INTF, it took only a few minutes to an image, the first one is probably the least clear:
κ(αι) εσκοτισθη ο [sun] κ(αι) ο αηρ
κ(αι) εσκοτϊσθη ο [sun] κ(αι) ο αηρ
σκοτϊσθη ο [sun] κ(αι) ο αηρ
It is a curious little drawing and I am not sure it looks like a sun, much more like a circle with a tail, perhaps a comet.
Does anyone know what this about, are there other examples, other symbols?