On the Devils form on the Hockey's Future Website I posted a question about where these jersey pieces come from.
I got this response:
The Devils wore the jerseys with the rubbery crests and numbers in the pre-season through 92-93. Even though 92-93 was the first year of red and black, the team wore the old red and greens in the pre-season. Brodeur wore #30, not #29 that pre-season in the red and green but I don't have a photo. I do happen to have a photo of his game-worn pre-season jersey from that year though, just not an action shot of him wearing it.
This lends itself to what I originally thought. Hmmmmm.
I think we may have cracked this one!