A peculiar looking beast indeed!
The only chance I can think of is if anyone took ciné of 106 on the last-ever run of them, an IRRS special about February or March in - I think - 1978. I was on it, and managed a cab run (in a CROWDED cab; "health'n'safety", and the poor driver's nerves, be damned!) from Lansdowne Road to Dalkey.
I did not have a high-end camera then, and the pics I took are nothing different to those taken by many others with better cameras. Perhaps someone like Walter McGrath or Tony Price was on that trip? If so, and IF they took "moving" images, they will now be with the IRRS.
Some old clips of trains on the north Wexford line and the Mallow - Waterford may show them - they were regulars on the latter until the 121s largely displaced them. There are bits of wobbly colour film on youtube here and there covering that.