I have several NuBus JackHammer cards. One of them is a very old model with a hand written serial number on the yellow (not green) board and it too is missing some pins in the 50 pin SCSI connector.

I can't remember if I have tested its functionality, but I think that I have. I do not have a flag in my brain saying any of my JackHammers need repair, so I think they're all good, except a few of the later-acquired green-boarded ones, which are flagged as untested.

Anyway, the point is I have an old yellow board one with missing pins as well. I don't remember if it is those particular pins.