Help identifying some mystery 41c modules

[ScottJ]

I could use some help identifying some modules that came in a 41CX I just bought. There are three of them. They were apparently cleaned of all external labels by a well-meaning restorer.

One is clearly a dual X-Memory module - when it’s installed, my CAT 4 jumps from 124 to 600 registers. Love it.

The other two return stuff I have never seen in CAT 2.
First module:
DST 12V4}5 (that } is the closest I can find ... it's the goose.)
DST 12 1V
DST 12+2V
DST 12-2V

Second module:
DIST 12 V3
DIST 12 -1
DIST 12 +2
DIST 12 -2

Any ideas? I have checked every list of ROMs I can find and nothing like these seems to be known. Any help appreciated. Is there any way to analyze these to get program or function names that might give bigger clues? Do I have something unique here?