I have available a number of what looks like industrial PDP-11 stuff.
These board do have a grey handle and are marked 'BH-xxx' instead
of 'Mxxxx'.
Several boards, single, dual, quad & hex ones. And also a backplane.
If interested, let me know off list.
Ed
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Certified : VCP 3.x, SCSI 3.x SCSA S10, SCNA S10