I initially could not understand your question, but on reflection I think you are after informaton about very early A320 series, appears from the fleet lists that only the first 21 CFM powered were built as a dash 100 series (111, light weight varient). The first IAE powered aircraft being number 28, listed as A320-231 and the later aircraft being delivered as A320-232. I was a late starter on the aircraft type during early 1989, when BA was operating there first few aircraft.
when they were more like groundbuses.