kbarber wrote:(Just to confuse the issue, some non-peggers had a drop-handle intended to be used to flick the needles to give routing information, disconnected by the 1930s I believe but not always removed and some remained in situ until the end.)
Yes, these were used in certain areas where special routing bell codes were later used, i.e. areas with many junctions. I would be tempted to say all remained in situ but perhaps I should cover myself with the word nearly.
But in terms of the computer model, I doubt they would need to be provided so a plain front to the (missing) lower part is probably relevant for that.