Cray Supercomputer Boards

I bought these boards from Tony Cole (that guy who purchased a Cray-1 in 1993 for $10k).
I believe he was selling his personal boards since I managed to get them from several models.
The pictures here are boards from the Cray X-MP supercomputer, however I also have a memory & logic board from the Cray-1 and a memory & logic board from the Cray-2.

Cray X-MP Memory Board

Cray X-MP Memory Board (2)