Data IO 29B / Unipak 2B adapter?

[Mattis Lind]

I need to read a couple of Signetics 82S215 bipolar PROMs with my old Data
IO 29B / Unipak 2B. But it needs a 351B-068 adapter.

Does anyone has information regarding this adapter?

I did find an old post in DATA_IO_EPROM at groups.io mailinglist that a man
named Alfred Marin had boards. I even found his email but it bounced.

Any other pointers in this subject?

/Mattis