I'm pretty sure the H216 was too new to have been
used in an MA10 or
MB10, but I don't know which core planes or other modules were used.
They might have still been using core modules made by external vendors
like Ferroxcube.
It's looking to be the same vintage as the 11/05 memory I have (the
H214) so early 70's.
I'm uploading a picture of that and some 11/24 pictures to:
https://www.crystel.com/pdp
Should be there in an hour.
CZ