So, a peculiar thought occurred to me earlier.
The Avetat, and Ametat, were artifacts of immense sophistication, and disappeared seemingly without trace. And of course everyone knows that they were given to Amash-Akura by the Sefrim, who wore masks.
And also of course, the artifacts vanished without trace.
“But Doctor V”, you say, “why did you mention Triglavian space ? Are you implying the Triglavians were Sefrim ?”
Well, as amusing as that would be, no. While the Triglavians are also highly advanced, religious, and wear masks, that could just be pure coincidence, rather than clear evidence of them being Sefrim.
However, the fact that the artifacts disappeared without trace, and have never been found, is interesting. Perhaps the Sefrim also knew how to traverse Abyssal space, and perhaps the artifacts were moved there. Which would certainly explain why no trace of them has ever been found.
So, I think it would be useful if any Faithful pilots that enter the Abyss can keep an eye out for anything that looks like it was built by Sefrim.
Perhaps the Ametat and Avetat might yet be located.