Yes, MK2 Buffet in service until late 1997.
https://www.google.co.uk/search?biw=1530&bih=738&tbm=isch&sa=1&q=nir+mk2+buffet&oq=nir+mk2+buffet&gs_l=psy-ab.3...13747.19439.0.19926.14.14.0.0.0.0.155.1504.6j8.14.0....0...1.1.64.psy-ab..0.8.925...0j0i67k1.YNJ0GfIi-fA#imgrc=_ See first two images.
Now own by RPSI as Green livery 547(Note- one windows removed).
https://www.steamtrainsireland.com/rpsi-collection/27/mk2-dining-car-547